CN118058701B - Amblyopia early detection system - Google Patents

Abstract

The application relates to an early detection system for amblyopia. The amblyopia early detection system comprises a guide module, wherein the guide module is provided with a vision tracking unit, a data acquisition unit for acquiring the detection behaviors of a subject to detect the vision ability of an infant and an induction unit for attracting the attention of the subject to guide the eyes of the infant to display dynamic or static behaviors meeting detection requirements. When the eye dynamic change is carried out by the guidance of the guiding module, the program displayed by the inducing unit is inserted in the detection process at the time point of the occurrence of the behavior with interference to the detection process based on the occurrence of the behavior with interference to the detection process fed back by the data acquisition unit, so that the attention of the subject is attracted, and the eye of the subject is induced to move according to a preset mode. The application optimizes the detection process of the system aiming at the interference behaviors possibly generated by infants in the detection of visual abilities, and provides different methods for attracting attention aiming at different interference behaviors possibly generated by infants.

Description

A system for early detection of amblyopia

Technical Field

The present invention relates to the technical field of vision detection, and in particular to an early detection system for amblyopia.

Background technique

Amblyopia (lazy eye) refers to the phenomenon that the best corrected visual acuity of one or both eyes is lower than the visual acuity of the corresponding age due to non-organic lesions. Amblyopia in children is mainly caused by abnormal visual experience such as monocular strabismus, anisometropia, high refractive error and form deprivation during the visual development period. If amblyopia is not diagnosed and treated before the age of 8, it may lead to delayed treatment and lifelong poor vision. Binocular amblyopia develops gradually from birth to 9 years old. During this development period, strabismus or form loss may cause amblyopia. Amblyopia will not occur after the age of 9 even if the above reasons exist.

Amblyopic patients not only experience a significant decrease in monocular or binocular vision, but also lose binocular single vision and stereoscopic vision, seriously affecting their quality of life.

The Chinese patent with publication number CN116458835A involved in the prior art discloses a system and method for detecting and preventing myopia and amblyopia in young children. The system includes: an interactive module, a head-mounted device and a processor; the interactive module is used for interaction between the user and the head-mounted device; the head-mounted device includes a display module, at least one adjustable lens, at least one light beam transmitter and at least one light beam receiver, and the head-mounted device is used to perform at least one of vision detection and vision correction on the user. However, the device is only suitable for children who already have self-awareness and can interact with the outside world through language. For infants and young children under the age of 4 who do not have independent self-awareness, interactive devices are not applicable.

In particular, when the testing process causes discomfort to infants and young children who have no independent consciousness, they will not only interfere with the test, but may even interrupt the test, and parents will need to put extra effort into comforting them.

Therefore, in a home environment, limited by the environment and testing equipment, routine infant eye status testing requires parents to operate independently. The testing process often causes discomfort to infants and young children, causing them to interfere with and resist the testing process. Parents are also required to comfort their infants and young children while being unable to complete the test.

Existing vision tests for infants and young children or eye function tests related to amblyopia focus on optimizing the equipment, but cannot scientifically guide infants and young children to follow the testing process to complete the test, for example: the infant vision testing device and testing method disclosed in the Chinese patent publication number CN105326471A.

In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology.

Summary of the invention

The prior art has already seen a technical solution for evaluating and testing the selective gaze ability of infants and young children by using the preferential gaze method. For example, the patent document with publication number CN104173021A discloses a method for testing the vision of infants and young children, including the following steps: setting system parameters, including setting the starting detection vision value, setting the distance between the display and the infant, setting the time interval for the pattern to change position once, and setting the number of tests for each vision value; attracting the attention of the infant; displaying the infant selective gaze chart on the image display, the selective gaze chart consists of a vision test bar pattern and a gray background, and each bar width corresponds to a vision value in the international standard vision chart; changing the position of the bar pattern in the selective gaze chart; each vision value is tested several times according to the set number of tests; adjusting the next test vision value according to the test results until the highest vision value is detected. This technical solution uses bars of different widths as visual stimuli, compares them with a uniform gray target, and judges whether the subject finds the bars by observing the gaze direction of the subject, so as to perform vision analysis. However, this technical solution only assumes that the subject can complete the vision test without being disturbed. If the infant observes the change in the position of the bar pattern, the eyeballs turn accordingly and focus on the bar pattern in the new position, it means that the vision test is successful. If the infant's eyeballs do not turn accordingly, it means that the vision test has failed. The actual situation is that the attention of infants is easily affected by other behaviors. This detection method cannot correct the situation that can divert the subject's attention during the test, resulting in a significant reduction in the success rate of completing a single vision test. In addition, this technical solution requires statistical analysis of the test results in an artificial way, and cannot obtain more objective and accurate vision test results.

The present application provides an early detection system for amblyopia, which comprises a guiding module provided with a visual tracking unit, a data collection unit for collecting detection behaviors of a subject, and an induction unit for attracting the attention of an infant subject.

The system also includes a handheld terminal for controlling the guidance module. The handheld terminal controls the visual tracking unit of the guidance module to collect eye information when detecting the eye state. The eye information includes binocular inhibition degree and binocular vision for detecting the visual ability of infant subjects, wherein:

When the subject makes dynamic eye changes under the guidance of the guidance module, based on the occurrence of behavior that interferes with the detection process as feedback from the data acquisition unit and/or the visual tracking unit, a program displayed by the induction unit is inserted into the detection process at the time when the behavior that interferes with the detection process occurs, so as to attract the subject's attention and induce the subject's eyes to move in a preset manner.

In order to improve the efficiency and accuracy of vision testing, the prior art has already appeared a technical solution that automatically shoots the face of the testee and analyzes the eye movements by setting a camera unit. For example, the patent document with publication number CN105326471A discloses a device and method for testing the vision of infants and young children, which is used to detect the vision of the testee, including a display unit for displaying a test pattern, a camera unit for photographing the testee observing the test pattern to obtain a photographed image, and a processing unit for connecting and controlling the display unit and the camera unit, and storing and calculating and analyzing the photographed image to obtain the vision of the testee. The technical solution determines the testee's observation results of the current test pattern, and adjusts the test pattern according to the observation results. When the observation results cannot be used to determine that the testee has a clear visual behavior, the frequency of the bar pattern is lowered, and when the observation results can be used to determine that the testee has a clear visual behavior, the frequency of the bar pattern is increased until the highest frequency that the testee can find is determined to obtain the testee's vision. However, the visual guidance of the test subject in the technical solution is only through changing the frequency of the bar pattern, which can only attract the test subject's attention to a certain extent and cannot help the test subject complete the entire test process. In addition, different test subjects can be subject to different interference factors, and different test subjects can be effectively guided in different ways. The technical solution cannot adjust different guidance methods according to the various interference situations to which the test subject is subject, so that the complete vision test process can be realized. Compared with the above-mentioned prior art, when the subject is affected by interference behavior during the vision test, the present invention can insert the corresponding program displayed by the induction unit according to the occurrence time point of different interference behaviors to re-attract the subject's attention, and induce the subject's eyes to move in a preset manner to complete the overall vision test process. Based on the above-mentioned distinguishing technical features, the problems to be solved by the present invention may include: how to overcome the interference of different interference behaviors on the vision test process, and assist the subject to correct the affected test behavior to complete the expected test process. Specifically, the guidance module of the present invention can not only be used as a detection component of the vision test to realize the basic vision test function, but also can be used as a guiding component to correct the subject's attention shift to improve the integrity and accuracy of the vision test. Furthermore, the beneficial effects of this technical solution are:

The present application can determine whether an infant has abnormal visual experience by guiding the infant to perform eye movements when it is detected that the infant's vision does not meet the standard, thereby providing the guardian with preliminary results of amblyopia judgment.

This application adjusts the detection process in real time based on the emotional feedback of infants during the detection process. For example, when infants behave in a way that interferes with the detection process, sweet foods or luminous toys are used to soothe the infants and induce them to follow the device to move their eyes. According to the emotional changes of infants fed back by the data acquisition unit, the device can arrange in advance the relevant procedures for soothing and attracting the attention of infants, and combine the hardware equipment proposed in this application to realize routine eye detection without parental participation. Compared with the prior art, the system in this application can increase the fluency of the infant eye detection process, improve detection efficiency and accuracy, and reduce the participation of parents in infant eye detection, thereby reducing the energy that parents put into continuous home detection, which also indirectly increases the enthusiasm of parents to detect infants' eyes.

According to a preferred embodiment, when the data collection unit and/or the visual tracking unit collects data of the subject's behavior that interferes with the detection, the handheld terminal generates a corresponding program displayed by the induction unit based on the classification of the behavior, wherein:

When the data collected by the visual tracking unit is of the first category in which the detectable area continues to disappear, the program includes controlling the induction unit to induce the subject to open his eyes at a set position;

When the data collected by the data collection unit and/or the visual tracking unit is of the second category in which the detectable area disappears intermittently and irregularly, the program includes controlling the induction unit to induce the subject to grasp at a set position;

When the data collected by the visual tracking unit is of the third category without eye movement change, the program includes controlling the induction unit to display the object in a displacement state.

Compared with the above-mentioned prior art, the present invention can adaptively adjust the display program of the induction unit according to the dynamic changes of the subject's eye attention. Based on the above-mentioned distinguishing technical features, the problems to be solved by the present invention may include: how to maintain the subject's eye attention state in a state where the vision test can be accurately completed, so as to improve the accuracy of the vision test results. Specifically, the beneficial effects of the present technical solution are:

Compared with the prior art that actively generates information to induce children to make eye behaviors to collect eye state information, the system involved in this application is set to collect eye information in daily state based on the state of infants and young children without autonomous consciousness. In particular, unlike children who already have complete vision and obvious autonomous consciousness of viewing the outside world, the visual nerves of infants and young children to whom this application is applicable are not fully developed, and their eyes are often in a state of unconscious rotation and tremor when they are awake.

When the eye condition of infants and young children is normal, the eye information collected in daily life is likely to provide the handheld terminal with data for evaluating the eye condition of the subject, such as eye movement angle, eye movement speed, pupil diameter change, etc.

Based on the above information, according to the preset data threshold for evaluating the subject's eye condition, the handheld terminal can generate an evaluation result of whether the subject's eye condition is normal or whether the subject needs depth detection to evaluate the risk of amblyopia.

Different from children who have autonomous awareness and can interact, this application combines the daily behavior of infants and young children to collect relevant information about the visual reactions of infants and young children in a relaxed and natural state, which not only reduces the impact of the detection process on infants and young children, but also increases the accuracy of the detection information.

Furthermore, the present application optimizes the detection process of the system in response to the interfering behaviors that may occur when infants and young children detect their eye states, and proposes different methods of attracting attention in response to the different interfering behaviors that may occur in infants and young children. For example, infants and young children cannot observe luminous parts when their eyes are closed. Therefore, in response to the eye-closing behavior that may occur when infants and young children are bored or tired, the method of playing nursery rhymes that interest infants and young children is adopted to attract the infants and young children's attention.

When an infant waves his arms, it indicates that he is in an excited state. In this state, the infant does not need to attract his eye attention, but needs to be provided with graspable objects that do not block his eyes. Therefore, the induction unit vibrates at the graspable position and provides the infant with graspable snacks or light. The infant's waving limb behavior can be determined based on the detected eye information, and can also be determined based on the image of the infant's behavior collected by the data acquisition unit.

When an infant's eyes stare at a location of interest for a long time, based on the system's need to detect eye movements, the induction unit controls the displacement of its parts set toward the infant's side to induce the infant's eye movements.

According to a preferred embodiment, the program used by the induction unit to attract the subject's attention includes at least three programs based on the subject's age and inclination, wherein:

Based on the subject being in the first age range where milk is the main food, the program includes controlling the induction unit to emit light or sound;

Based on the subject being in the second age range of a carbohydrate-based diet and having a preference for food, the program includes the steps of attracting the subject's attention with food having an aroma that attracts the subject's attention to induce eye movement of the subject;

Based on the subject being in the second age range of a carbohydrate-based diet and having a preference for playing, the program includes the step of inducing eye movement of the subject by attracting the subject's attention with an inducing unit having light and/or sound for attracting the subject's attention.

Compared with the above-mentioned prior art, the present invention can adjust the specific procedures of the induction unit for attracting the subject's attention according to the individual characteristics of different subjects. Based on the above-mentioned distinguishing technical features, the problems to be solved by the present invention may include: how to improve the effectiveness of attracting the subject's attention. Specifically, the beneficial effects of the present technical solution are:

In order to further increase the effectiveness of attracting infants' attention, the system can differentiate the programs that are generated in different situations according to the age and preferences of infants. In particular, although snacks have a significant effect on most infants, this measure is not suitable for infants who mainly eat milk.

Based on the considerations of applicability and attractiveness, the system can, during the initial setting, send corresponding programs to the induction unit based on the age of the infant preset by the parents and the tendency of the infant to exhibit disruptive behavior.

Specifically, based on the age and preferences of infants and young children, combined with the targeted programs generated by the above-mentioned different disruptive behaviors, the system can generate different programs when infants and young children of different ages produce different disruptive behaviors.

According to a preferred embodiment, the handheld terminal is configured to: when the time of dynamic changes in the subject's eyes collected by the visual tracking unit exceeds a preset threshold and the handheld terminal does not generate an eye state assessment result for the subject, a detection scheme including a universal detection program and/or a key detection program is generated in combination with the static morphology of the subject's eyes, with the displacement and residence time of the induction unit as control factors.

Beneficial effects of this technical solution:

Limited by the randomness of infants' activity states, in order to make up for the problem of insufficient eye information for evaluating infants' eye states due to short awake time, the system can also generate targeted detection methods when the above situation occurs. For example, when eye movement-related data is not collected, especially when the upward eye movement information of infants is not collected, the handheld terminal can generate a program to induce the infants' eyes to turn upward.

Furthermore, considering that some infants and young children who have amblyopia due to incomplete development will basically not have changes in their eye state that meet the detection requirements in daily environments, for example, due to the abnormal fast and slow eye movements of amblyopic children, which affects their visual acuity and stereoscopic vision, they will not actively move their eyes to look at objects, so it is difficult to obtain eye movement detection information. Therefore, when the detection information cannot be obtained within a reasonable time, in order to confirm whether the infant needs to strengthen the detection related to amblyopia, the system can collect static eye morphology of infants and young children, such as images of drooping eyelids, drooping eyes or squinting.

According to a preferred embodiment, when the static morphology of the subject's eyes matches the preset features, the handheld terminal generates a detection scheme including a universal detection program and a key detection program generated based on the matching features;

When the static morphology of the subject's eyes does not match the preset features, the handheld terminal generates a detection plan including a universal detection procedure.

Beneficial effects of this technical solution:

By analyzing the static morphology of the subject's eyes, the system can improve its detection level. It should be noted that the more targeted the detection behavior is, the deeper the impact on the comfort of the infant, the longer the detection time will be, and the more energy the parents need to spend to comfort the infant, which is why this application needs to distinguish various detection behaviors.

This application determines whether it is necessary to provide targeted detection programs for infants through dual analysis of the daily eye state of infants and infants' static eye morphology. On the one hand, such differentiated detection can reduce the energy that parents need to pay in daily life and reduce the unnecessary data processing of the equipment; on the other hand, since such in-depth inspections often require behaviors such as strong light stimulation, and the detection of infants' eye states is a high-frequency detection behavior, avoiding such detection when it is unnecessary can reduce the impact of detection behaviors on infants' eye development.

The present application also relates to a guiding module. The guiding module can attract the attention of the subject. The guiding module includes a visual tracking unit for locating and collecting eye information of the subject, an induction unit for attracting the subject's attention, and a base for accommodating the above-mentioned device. The movable cover moves along a preset path under the drive of magnetic force. The guiding module can be integrated with or connected to a data acquisition unit for collecting the detection behavior of the subject.

According to a preferred embodiment, a permanent magnet is disposed on the bottom surface of the movable cover, and a plurality of slideways are disposed in the base corresponding to the moving path of the movable cover, wherein controllably movable electromagnets are disposed in the slideways.

According to a preferred embodiment, an adjustment bracket for adjusting the orientation angle of the guide module is provided on the back of the shell, and the adjustment bracket includes a support back plate, a first bracket and a rotating axis. The support back plate is used to be installed on the back of the shell, and is hinged to the first bracket placed on the support surface through the rotating axis.

Beneficial effects of this technical solution:

The present application provides a guidance module for infants and young children. The guidance module is provided with a storage hole for placing snacks and a movable cover for covering the storage hole. The movable cover can move freely on the surface of the storage hole opening to achieve the purpose of guiding the infants and young children's eye movements.

Specifically, a light-emitting part is disposed on the top of the movable cover.

This application designs a guidance module based on the characteristics of infants' unconscious state. On the one hand, when infants interfere with the device's collection of their eye state data, the device can selectively turn on some functions based on the degree of attraction of light, sound or snacks to different individuals, so as to improve the device's ability to attract infants' attention; on the other hand, the guidance module can also set different methods of attracting attention for infants of different ages.

At the same time, the movable cover involved in the present application can produce an eye training effect by moving on a set moving path, such as the training method shown in Figure 11.

Furthermore, the guiding module of the present application arranges the visual tracking unit and the movable cover on the same surface, so that the visual tracking unit can capture the dynamic image of the eyeball that rotates due to the displacement of the movable cover.

As one of the fastest muscles in the body, the eye muscle group can move the eye from one position to another in just 0.1 seconds. This also means that capturing dynamic eye images places high demands on the image acquisition equipment and is prone to out-of-focus. The present application can synchronously acquire images through a pre-set eye rotation path based on the preset moving path of the movable cover after the visual tracking unit captures the eye image, thereby avoiding the problem of out-of-focus images caused by the lag of image tracking in a very short time.

According to a preferred embodiment, the guiding module is provided with at least two visual tracking units on the same surface, wherein the subject's eye information collected by the visual tracking units arranged at different positions can be used to secondary verify the evaluation result of the subject's eye state.

According to a preferred embodiment, the housing is provided with a load-bearing belt for suspending the guide module so that the guide module faces the subject in a lying state.

According to a preferred embodiment, the top of the movable cover is provided with a light-emitting part to attract the subject's attention.

The present application provides a method for early detection of amblyopia. The method for early detection of amblyopia comprises the following steps:

When the subject's eyes are changing dynamically, the subject's eye information is captured, wherein:

Based on the occurrence of behaviors that interfere with the detection process, a program for controlling the device to display a program to attract the subject's attention is inserted into the detection process at the time point when the behaviors that interfere with the detection process occur, so that the subject's attention is attracted, thereby inducing the subject's eyes to move in a preset manner.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a diagram showing a state of use of a detection system provided by the present invention;

FIG2 is a schematic diagram of a module structure of an embodiment of a detection system provided by the present invention;

FIG3 is a schematic diagram of a module structure of another embodiment of a detection system provided by the present invention;

FIG4 is a structural diagram of a guide module provided by the present invention;

FIG5 is an exploded structural diagram of a guide module provided by the present invention;

FIG6 is a structural diagram of a guide module according to another embodiment of the present invention;

FIG7 is an exploded structural diagram of a guide module according to another embodiment of the present invention;

FIG8 is a schematic diagram of the structure of the storage hole provided by the present invention;

FIG9 is a distribution diagram of electromagnets provided by the present invention;

FIG10 is a structural diagram of an adjustment bracket provided by the present invention;

FIG11 is a vision restoration training image in the prior art;

12 is a flow chart of the amblyopia detection method provided by the present invention;

FIG. 13 is a flow chart of the method for coping with infant interference detection provided by the present invention.

Reference numerals list

100: handheld terminal; 200: guidance module; 210: induction unit; 211: storage hole; 212: movable cover; 213: light-emitting part; 214: sound-emitting part; 215: base; 216: slide; 217: adjustment bracket; 2171: support back plate; 2172: first bracket; 2173: rotating shaft; 218: electromagnet; 220: visual tracking unit; 221: visible light emitting component; 222: eye collection camera; 230a, 230b: data collection unit; 231: behavior collection camera; 240: shell; 300: power management module; 400: battery module.

Detailed ways

The following is a detailed description with reference to the accompanying drawings.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. "Several" means two or more, unless otherwise clearly and specifically limited. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In medical devices, the proximal end refers to the end of the device that is close to the operator when the device is operated, and the distal end refers to the end of the device that is away from the operator or performs corresponding operations on the patient when the device is operated.

Infant subjects include infants and young children aged 0 to 4 years old. Based on the development of children's mental health, child psychology divides the age of infants and young children into: infants (birth to 1 year old) and toddlers (1 to 4 years old). Subjects of this age have insufficient language expression or comprehension abilities, and their mental attention is easily affected and they cannot cooperate with conventional testing methods.

The degree of binocular suppression can be determined by determining whether binocular function is consistent, which includes the degree to which the pupils of the two eyes contract synchronously.

Methods for testing binocular vision include the preferential fixation method.

The above two pieces of information are the basic information for determining whether infants and young children are at risk of amblyopia.

The handheld terminal 100 can establish a communication connection with the guidance module 200 via wired or wireless (Bluetooth, Wifi, Zigbee, etc.) such as data, sound, image signal and/or control signal. Specifically, the handheld terminal 100 is built with a storage module, a communication module for information transmission, a CPU for centralized data processing, and a GPU for processing image data.

The guidance module 200 has a built-in battery or is powered by an external power source to achieve functions such as control, being controlled, communication, and sound, light and electricity.

Alternatively, as shown in Figure 3, the handheld terminal 100 is a portable electronic device running an Android OS, iOS or Harmony OS operating system, which has a built-in camera and light source (i.e., the first data acquisition unit 230a is integrated into the handheld terminal 100, for example: see the mobile phone shown on the right side of Figure 4) for collecting the behavior of infants and young children.

At the same time, the present application provides an infant eye detection device suitable for home environment. The device includes a guidance module 200, as shown in Figures 3 and 4. The guidance module 200 is used to collect eye information related to pupil changes, eye movement trajectories and refractive information of infants and young children for judging the degree of binocular inhibition and binocular vision of infants and young children. The guidance module 200 can also attract the attention of infants and young children when collecting infant eye information to eliminate the interference behavior of infants and young children on the detection, or attract the attention of infants and young children to complete specific detection actions. When the handheld terminal 100 continuously receives the eye information sent by the guidance module 200, it generates a corresponding determination result for confirming whether the infant has an eye disease such as amblyopia. At the same time, when the transmitted data is interrupted in time or the data transmitted within a preset time period cannot be used for judgment and analysis, the handheld terminal 100 can send instructions to the guidance module 200 to enable the guidance module 200 to generate a program for attracting the attention of infants and young children to eliminate the interference behavior of infants and young children on the detection or complete a specific detection action, as shown in Figure 1.

On the other hand, the present application relates to a guidance module 200, which can interact with the handheld terminal 100, and can be grasped by infants and young children and has visual appeal to infants and young children. As shown in FIG2, the guidance module 200 includes a visual tracking unit 220, an induction unit 210, a battery module 400 and a power management module 300. The battery module 400 is used to provide the energy required for the guidance module 200 to work. The function of the power management module 300 includes dividing the voltage of the battery module 400 to each functional module. The visual tracking unit 220 shown in FIG4 can be wirelessly connected to the induction unit 210 (for example, external or handheld) to collect eye information related to pupil changes, eye movement trajectories and refractive information of infants and young children. The induction unit 210 is a device that attracts the attention of infants and young children. In addition, referring to FIG5, the guidance module 200 can be integrated with a second data acquisition unit 230b and/or can act as a first data acquisition unit 230a with the help of a camera of the handheld terminal 100 paired with it, which is used to collect facial information and behavioral information of infants and young children in addition to eye information.

The second data acquisition unit 230b integrated in the guidance module 200 may include an infant behavior acquisition camera 231, a drive motor and a microprocessor. Preferably, the second data acquisition unit 230b is used to collect facial images of infants. In the case of using a wide-angle lens, a lens with a viewing angle close to or equal to 180° (fisheye lens), the second data acquisition unit 230b can also collect full-body images of infants for judging the behavior of infants. The second data acquisition unit 230b can be arranged on the guidance module 200, as shown in Figures 2 and 10. Under the control of the instructions of the microprocessor, the drive motor drives the infant behavior acquisition camera 231 to collect facial images and/or full-body images of infants.

In the present application, since pupil image acquisition and behavior or facial image acquisition have different camera requirements, the two functions can be separated. Although the data acquisition unit used to collect behavior can also be used to track the eyes of infants and young children, since behavior and eyes need to be monitored at the same time, the present invention provides an additional visual tracking unit, which can be integrated with the guidance module 200, or can be an independent device that is wirelessly paired with the guidance module 200 (such as the visual tracking unit 220 shown in FIG. 4).

As shown in FIG. 2 or 3 and FIG. 4, the visual tracking unit 220 wirelessly connected to the guiding module 200 includes a visible light emitting component 221, an eye acquisition camera 222, a driving motor and a microprocessor. The visible light emitting component 221 is used to send a reflective light source to the infant's eyes for identifying the infant's eye movement trajectory to confirm the degree of binocular inhibition of the infant; the eye acquisition camera 222 is used to collect the infant's pupil morphology, cornea and pupil spot image; the driving motor is used to respond to the command of the microprocessor to drive the eye acquisition camera 222 to collect the characteristic information (including pupil morphology, cornea and pupil spot image) at the corresponding position of the infant's eyes, and the driving motor can also respond to the command of the microprocessor to drive the visible light emitting component 221 to send a reflective light source to the infant's eyes for identifying the infant's eye movement trajectory to confirm the degree of binocular inhibition of the infant.

Preferably, the eye acquisition camera 222 of the visual tracking unit 220 is a periscope camera. When the induction unit 210 is placed in front of the infant in the sitting state, the periscope-type visual tracking unit 220 can quickly and efficiently track the infant's eye features to obtain its eye information, as shown in FIGS. 1 and 6 .

The visual tracking unit 220 can be used as an independent device, and when collecting tasks, it can be separated from the induction unit 210 in a manner that can collect infant eye information. When detecting the infant's eye state, the guardian can place the visual tracking unit 220 in a position where the infant's eye features can be collected, thereby reducing the situation where the visual tracking unit 220 interferes with the infant's attention.

In this way, the above hardware devices are combined to implement the infant eye detection method involved in the amblyopia early detection system provided in the embodiment of the present invention.

As shown in FIG12 , a method for collecting eye information including binocular suppression degree and binocular vision for amblyopia detection is shown. The method comprises the following steps:

Using the handheld terminal 100 to control the visual tracking unit 220 of the guidance module 200 to collect the infant's eye information according to a preset program;

The visual tracking unit 220 wirelessly connected to the guidance module 200 is used to obtain the binocular refraction information, the dynamic change information of the pupils and the binocular eye movement trajectory of the infant to determine the binocular inhibition degree and binocular vision; since the visual tracking unit 220 is an independent handheld device, the data can be collected in a handheld manner and the data information can be sent to the guidance module 200;

When the binocular suppression degree or one or more characteristics of binocular vision do not meet the requirements, the above steps are repeated for re-examination or a result is directly generated to prompt the guardian that the infant's eye condition is questionable.

When loading preset programs, the handheld terminal 100 can selectively load preset programs for infants' double pupil dynamic change information and binocular eye movement trajectory, which can reflect the degree of binocular inhibition of infants; it can also selectively load preset programs for refractive information, which can reflect the binocular vision of infants. That is to say, these programs recommended and preset by professional physicians include optional programs for refractive information detection, optional programs for double pupil dynamic change detection, optional programs for binocular eye movement trajectory detection, and the number of re-examinations, wherein the order of occurrence of programs for obtaining infants' eye information (optional programs for refractive information detection, optional programs for double pupil dynamic change detection, optional programs for binocular eye movement trajectory detection) can change dynamically according to the behavior of infants. Preferably, for infants with partial monocular blindness, the preset program can also include the selection of a single eye to be detected. Through the above configuration, the present invention enables ordinary consumers to complete routine optical examinations at home with the help of preset programs containing professional knowledge of doctors, and the information collected by the preset programs will be forwarded to a cloud server with typical ophthalmic data processing capabilities through a handheld terminal 100 wirelessly connected to the guidance module 200 to give a preliminary judgment result. The visual tracking unit 220 of the present invention can be used to collect pupil images, for example, under the premise of using the pupil positioning method described in US20050031173A1, multiple facial images are continuously collected to determine the changes in the pupil of the eye; in addition, the visual tracking unit 220 can determine the refractive information by analyzing the eye image, for example, using the method described in CN110287797A to determine the refractive information of the eye.

According to a preferred embodiment, the method for detecting refractive information of the present application comprises the following steps:

By detecting the face of the infant, feature information about the infant's face is extracted, and then based on the angle feature information about the infant's eyes in the feature information, a light spot image formed by the refraction of external natural light entering the infant's eyes is obtained. Finally, based on the deep learning model, the light spot image is matched with different eye refractive information pre-stored in the storage module to determine the refractive information of the infant's eye corresponding to the acquired light spot.

Specifically, the visible light emitting assembly 221 emits light in the direction of the infant, so that the light enters the effective light-receiving eye socket area and/or the effective light-receiving pupil area of the infant, so as to obtain one or more light spot images formed by the refraction of external natural light into the eyes of the target object;

The corresponding spot shape and/or spot intensity distribution in the spot image is obtained, and the spot shape and/or spot intensity distribution is compared and matched with the refractive information of different eyes pre-stored in the database to determine the refractive information of the target object's eye.

The handheld terminal 100 can detect and determine the binocular vision of infants and young children based on the refractive information collected by the visual tracking unit 220 with the help of a cloud server with typical ophthalmic data processing capabilities. When the binocular or monocular vision of the infant and young children does not conform to the normal vision range of infants and young children, the above steps are repeated for re-examination or a result is directly generated to prompt the guardian that the infant and young children's eye condition is questionable.

According to a preferred embodiment, based on the preferential gaze method, the vision detection method of the present application comprises the following steps:

Based on the set parameters of the starting detection vision value, the display and the distance between the infant and the child, the handheld terminal 100 displays a selective gaze chart for vision testing, which consists of a vision test bar pattern and a gray background, and each bar width corresponds to a vision value in the international standard vision chart; the position of the bar pattern in the selective gaze chart is changed; the position of the bar pattern in the selective gaze chart is changed based on the set time interval for changing the position of the pattern and the number of tests for each vision value until the highest vision value is detected.

When the detected visual acuity value is lower than the preset standard (the visual acuity standard for the subject's age), the handheld terminal 100 generates the above-mentioned result for detecting the binocular inhibition degree of infants and young children. When one or more parameters characterizing the binocular inhibition degree of infants and young children are processed based on the cloud server and do not meet the preset standard (for example, there is tremor in one eye of the infant during eye movement), the handheld terminal 100 generates a corresponding warning message to prompt the guardian of the infant and young children to go to the hospital for treatment.

According to a preferred embodiment, the method for detecting pupil changes of the present application comprises the following steps:

Based on the visible light emitting component 221 emitting light to the infant's eyes, the handheld terminal 100 sends instructions to the microprocessor before and after the light emission, so that the eye acquisition camera 222 is driven by the driving motor to acquire the image of the infant's pupil;

The handheld terminal 100 processes pupil images at different time points with the help of a cloud server with typical ophthalmic data processing capabilities. When the pupils of both eyes change inconsistently at different time points, the handheld terminal 100 controls the visual tracking unit 220 to repeat the steps in the preset program for re-examination or directly generates a result to prompt the guardian that the infant's eye condition is questionable.

Preferably, the processing of the pupil image comprises the following steps:

The original images of the infant's eyes are collected by the eye collection camera 222 of the visual tracking unit 220, and the obtained original images of the target area including the pupil of the infant are preprocessed to obtain the grayscale of each pixel in the target grayscale image corresponding to the target area including the pupil;

The color information of the pixels in the original image is obtained in a scanning manner one by one, and is used to distinguish the pixel information of the sclera, iris or pupil. Each time the color information of a pixel is obtained, the handheld terminal 100 determines whether the pixel is located in the detection area of the pupil. If so, the original image is obtained and pre-processed to obtain the grayscale of each pixel in the target grayscale image corresponding to the detection area of the pupil, so as to obtain the detection area that can distinguish the pupil (that is, distinguish the pupil and the non-detection area outside it including the sclera and iris); if not, skip the pixel and repeat the above steps.

According to a preferred embodiment, the detection method of binocular eye movement trajectory of the present application can use pupil corneal reflection technology (PCCR). The detection method of PCCR includes: using at least one light source (i.e., visible light emitting component 221) to illuminate the eyes, so that the eyes produce obvious reflection of its light; based on the eye acquisition camera 222, obtaining an image containing the eyes with the above-mentioned reflection effect generated by the eyes; using the image containing the eyes obtained by the eye acquisition camera 222 to identify the reflection of the light source on the cornea and pupil, and calculating the eye movement vector based on the angle between the cornea and pupil reflection, and then combining the direction of the eye movement vector with the geometric features of other reflections to calculate the direction of the line of sight.

When the eye movement trajectories of both eyes are inconsistent, the handheld terminal 100 controls the visual tracking unit 220 to repeat the steps in the preset program for re-examination or directly generate a result for prompting the guardian that the infant's eye condition is questionable. The preset program can come from a cloud server that stores a set of programs designed by ophthalmologists.

The five-year medical textbook "Ophthalmology" (7th edition, People's Medical Publishing House) defines amblyopia as a decrease in the best corrected visual acuity of one or both eyes due to abnormal visual experience (monocular strabismus, anisometropia, high refractive error and form deprivation) during the visual development period, and no organic lesions are found in the eye examination. The cause of abnormal visual experience is often caused by the inconsistency of the patient's binocular function, that is, the patient's binocular inhibition. Abnormal visual experience caused by binocular inhibition can often be determined by detection methods such as eye following movement and gaze behavior. For example: when the two eyes follow the movement, the patient has optokinetic nystagmus, inconsistent binocular movement trajectories or inconsistent pupil reactions. According to existing research results, by checking the refraction of infants and young children's eyes, eye movements or other methods of detecting binocular inhibition, parents can use relatively simple methods in the home environment to discover their amblyopia problems in infants and young children (before the age of 4), so that medical staff can intervene in the treatment of infants and young children with amblyopia problems at an early stage.

Based on years of clinical experience, the applicant has found that most amblyopia problems are only detected by doctors in hospitals when children have obvious strabismus, astigmatism or other vision-related problems that affect their normal life. The main reason is that it is difficult for parents to detect abnormalities when children do not have obvious vision problems at home. This has also given rise to some amblyopia detection devices proposed in the prior art that detect eye conditions by methods such as recognizing images after wearing the device.

However, this type of equipment is only suitable for detecting the eye state of slightly older children (over 4 years old). This is because slightly older children can interact with the equipment and provide the equipment with data for determining the eye state (for example, feedback on whether the picture they see is clear); on the other hand, slightly older children can be induced or comforted by their parents' language (or other interactive programs that children can understand, such as games) when performing eye tests related to amblyopia problems, and endure the discomfort to complete the complete eye test process. This is also the reason why the current equipment related to amblyopia monitoring can be applied to children, such as the visual function detection system for amblyopia children based on virtual reality technology disclosed in the Chinese patent with publication number CN114190879A. Most of the equipment used to monitor the eye state of infants and young children in a home environment involved in the prior art remains at the stage of visual behavior detection, such as the infant vision testing device disclosed in the Chinese patent with publication number CN105326471A.

Example 1

This embodiment provides a guiding module 200 .

The orientation is defined as follows: the side of the guiding module 200 facing the eyes of the infant is the front side, the side opposite to the front side is the back side, and the surrounding surface between the front side and the back side is the side side.

The guiding module 200 includes a visual tracking unit 220 for locating and collecting eye information of the subject, a second data collecting unit 230b for collecting the detection behavior of the subject, an inducing unit 210 for attracting the subject's attention, and a base 215 for accommodating the above-mentioned devices.

As shown in FIG5 , a shell 240 is detachably mounted on the top of the base 215. The shell 240 is in the form of a cover, and its bottom is open so that it can cover the top of the base 215. As shown in FIG8 , a hollow window with an area smaller than the top area of the base 215 is provided on the top of the shell 240, so that except for the edge area of the top surface of the base 215 which is covered and blocked by the shell 240, most of the remaining areas can be connected to the outside through the shell 240. As shown in FIGS. 5 and 7 , the induction unit 210 includes storage holes 211 evenly distributed inside the shell 240 and a movable cover 212 that can move on the surface of the opening of the storage holes 211. Preferably, nine storage holes 211 can be evenly distributed inside the shell 240 in a nine-square grid manner. There are three movable covers 212, the bottom surfaces of the three movable covers 212 are in conflict with the surface where the opening of the storage hole 211 is located, and the size of the opening of the storage hole 211 is smaller than the bottom surface size of the movable cover 212, so that the movable cover 212 will not be engaged with the opening of the storage hole 211 when moving along a predetermined path, ensuring that the movable cover 212 can be controlled to smoothly translate along the surface it conflicts with, as shown in Figure 9. In addition, when the housing 240 is covered on the base 215, a certain gap is reserved between the top surfaces of the two, and the height of the gap is at least greater than the bottom surface thickness of the movable cover 212, so as to ensure that the movable cover 212 can move in the plane formed by the gap.

Preferably, as shown in FIG. 6 , the guiding module 200 is provided with a plurality of second data acquisition units 230 b , and one or more second data acquisition units 230 b are provided at a position where the four storage holes 211 are commonly connected.

Preferably, the movable cover 212 moves along a preset path driven by magnetic force. Specifically, as shown in FIG9 , a permanent magnet is provided on the bottom surface of each movable cover 212, and a plurality of slideways 216 are provided on the moving path corresponding to the movable cover 212 in the base 215, and a controllably movable electromagnet 218 is provided in the slideway 216. The electromagnet 218 can be magnetic when powered on, and can be displaced along a predetermined path in the slideway 216 under the drive of a micro motor, thereby driving the movable cover 212 to move along the same moving path as the electromagnet 218 by virtue of its magnetic adsorption force on the permanent magnet. Preferably, during the movement of the movable cover 212, the area of its bottom surface that overlaps with the storage hole 211 is called the first area, and the area of its bottom surface that is always outside the orifice range of the storage hole 211 is called the second area, and the sum of the first area and the second area is the complete bottom surface of the movable cover 212, and the second area is circumscribed to the first area. Preferably, since the electromagnet 218 is arranged in the slide 216, and the slide 216 is arranged in the spacing area between the storage holes 211 to avoid blocking the use of the storage holes 211, the permanent magnet on the bottom surface of the movable cover 212 can be arranged in the second area of its bottom surface to achieve the corresponding position of the permanent magnet and the electromagnet 218 in the vertical direction, thereby ensuring that the electromagnet 218 can always maintain the maximum magnetic driving force on the permanent magnet.

Preferably, one or more electromagnets 218 may be disposed in the base 215. If multiple electromagnets 218 are used to drive the movable cover 212 to move, it is necessary to ensure that each electromagnet 218 has a synchronous movement trajectory to ensure stable magnetic adsorption of the movable cover 212 during the process.

Preferably, an adjustment bracket 217 for adjusting the orientation angle of the guide module 200 is provided on the back of the housing 240. As shown in FIG10 , the adjustment bracket 217 includes a support back plate 2171, a first bracket 2172 and a rotation shaft 2173. The support back plate 2171 is used to be installed on the back of the housing 240. It is hinged with the first bracket 2172 placed on a support surface (such as a desktop, the ground, etc.) through the rotation shaft 2173. The rotation shaft 2173 can be an electric rotation shaft, so that it can rotate to a certain extent under the control of the driving motor, so that the adjustment bracket 217 performs a rotational movement in which the first bracket 2172 is stationary relative to the support surface and the support back plate 2171 rotates around the rotation shaft 2173. By controlling the rotation degree of the rotation shaft 2173, the angle between the plane where the support back plate 2171 is located and the support surface can be adjusted, so that the orientation angle of the front of the guide module 200 can be adjusted. Since the guide module 200 provided in this embodiment needs to face the eyes of the infant to achieve the best evaluation effect, the height of the support surface where the guide module 200 is placed cannot be predicted in different scenarios, so it is difficult to set the elevation angle of the guide module 200 in advance to ensure that it faces the eyes of the infant. The adjustment bracket 217 can easily adjust the orientation angle of the guide module 200, so that the guide module 200 can face the eyes of the infant in various scenarios, ensuring the accuracy of the evaluation results. The visual tracking unit 220 set on the same surface as the movable cover 212 can focus in advance and rotate synchronously with the subject's eyes based on the preset movement trajectory of the movable cover 212, so as to obtain the subject's eye movement trajectory, eye refraction information and eye pupil changes for evaluating the subject's eye state when the subject's eyes rotate and/or the eyes observe objects at different distances. Specifically, the visual tracking unit 220 is arranged on the top surface of the base 215 in a relatively fixed position, and its component for collecting the subject's eye state is in the same plane as the bottom surface of each movable cover 212, and the point position of any visual tracking unit 220 does not overlap with the moving trajectory of each movable cover 212.

According to a preferred embodiment, the guidance module 200 is wirelessly connected to at least two visual tracking units 220, wherein the subject's eye information collected by the visual tracking units 220 set at different positions can be used to secondary verify the evaluation results of the subject's eye state. Preferably, as shown in Figures 1 and 6, the visual tracking unit 220 is separated from the guidance module 200, so that the visual tracking unit 220 of the periscope structure can be artificially placed far away from the infant subject to prevent the behavior of the infant subject from interfering with the static state of the visual tracking unit 220.

According to a preferred embodiment, parents can actively place snacks in the storage holes 211, and use snacks to attract the attention of infants and young children. In order to avoid the situation where a storage hole 211 where snacks need to be placed is blocked by the movable cover 212 and cannot be placed, an idle area with an area at least equivalent to the bottom area of the movable cover 212 is provided on the base 215 between each two adjacent storage holes 211, which is used to temporarily place the movable cover 212, thereby exposing all the storage holes 211. Preferably, when 9 storage holes 211 are evenly arranged on the base 215 in a nine-square grid, there are a total of 12 idle processing module placement areas arranged between two adjacent storage holes 211.

As shown in FIG4 , the top of the movable cover 212 is provided with a light-emitting part 213 and a sound-emitting part 214 to attract the attention of infants. The plurality of movable covers 212 are set in different colors for infant vision detection. According to a preferred embodiment, the information for issuing instructions, processing information, and receiving collected data can be a mobile terminal, a PC terminal, or other remotely set server. Preferably, the handheld terminal 100 is a mobile phone.

Example 2

This embodiment provides a non-language interactive amblyopia detection or amblyopia early detection system. In this embodiment, except that the handheld terminal 100 controls the guidance module 200 with the help of a cloud server with typical ophthalmic data processing capabilities, other hardware is the same as the previous embodiment.

Based on clinical experience, the inventors of this application have found that when tracking the dynamic changes of the eyes under natural behavior of infants and young children, the main interference behaviors that affect information collection include infants and young children closing their eyes to rest, infants and young children waving their limbs, and infants and young children crying or being affected by other conditions. The eyes are in a focused position for a long time. For example, the article "Visual Development of Babies Aged 0-1" proposes that as infants and young children explore the world, they will show a strong interest in moving objects in their surroundings (such as small flying insects, walking parents) while awake, and unconsciously move their eyes to follow these moving objects within the visual range, or stare at brightly colored static objects for a long time. Based on the age and preferences of infants and young children, combined with the targeted programs generated by the above-mentioned different interference behaviors, the system can generate different programs for different interference behaviors generated by infants and young children of different ages.

The visual tracking unit 220 is passively triggered to collect eye information of infants in an awake state. When the following situation occurs during the detection process, that is, when the data collected by the data collection unit is the first category in which the detectable area continues to disappear, the handheld terminal 100 generates a corresponding program according to the pre-set age and inclination of the infant. Specifically, based on the subject being in the first age range of milk-based food or the subject being in the second age range of carbohydrate-based food and their inclination is to play, the program includes controlling the sound-generating part 214 of the induction unit 210 to emit a preset sound belonging to the wake-up category, for example: a wake-up voice recorded by a parent, as shown in FIG13 .

Based on the subject being in the second age range whose main diet is carbohydrates and whose preference is food, food with a scent that attracts the subject's attention is placed in the central storage hole 211 and/or the sound-emitting part 214 of the control induction unit 210 emits a preset sound belonging to the awakening category.

When the time of dynamic changes of the subject's eyes collected by the visual tracking unit 220 exceeds a preset threshold and the data used to evaluate the subject's eye state lacks information on the infant's left eye movement, the handheld terminal 100 acquires the subject's eye image.

When the static eye morphology of the subject does not match the preset characteristics, based on the subject being in the first age range where milk is the main food or the subject being in the second age range where carbohydrates are the main food and the subject prefers to play, the handheld terminal 100 controls the light-emitting part 213 of the induction unit 210 to emit light and the movable cover 212 provided with the light-emitting part 213 to move to the left relative to the infant to guide the infant to show leftward eye movement behavior.

Example 3

This embodiment provides a non-language interactive amblyopia detection or amblyopia early detection system. In this embodiment, except that the handheld terminal 100 controls the guidance module 200 with the help of a cloud server with typical ophthalmic data processing capabilities, other hardware is the same as the previous embodiment.

Based on the age and inclination of the infant, combined with the disruptive behaviors collected by the first data collection unit 230a integrated in the handheld terminal 100, the handheld terminal 100 can generate different programs for different disruptive behaviors generated by infants of different ages.

The visual tracking unit 220 is passively triggered to collect eye information of infants in an awake state. When the following situation occurs during the detection process, that is, when the data collected by the visual tracking unit 220 is the second category in which the detectable area disappears intermittently and irregularly, the handheld terminal 100 generates a corresponding program according to the pre-set age and inclination of the infant. Specifically, based on the subject being in the first age range where milk is the main food or the subject being in the second age range where carbohydrates are the main food and their inclination is to play, the program includes one or more movable covers 212 that are displaced while emitting light or sound, as shown in FIG13 .

Based on the fact that the subject is in the second age range whose main food is carbohydrates and whose preference is food, food with a fragrance that attracts the subject's attention is placed in all the storage holes 211 .

When the time of dynamic changes in the subject's eyes collected by the visual tracking unit 220 exceeds a preset threshold and the data used to evaluate the subject's eye state lacks upward eye movement information of infants and young children, the handheld terminal 100 obtains the subject's eye image based on the data collection unit.

When the static eye morphology of the subject does not match the preset characteristics, based on the subject being in the first age range where milk is the main food or the subject being in the second age range where carbohydrates are the main food and the subject prefers to play, the handheld terminal 100 controls the light-emitting part 213 of the induction unit 210 to emit light and the movable cover 212 provided with the light-emitting part 213 moves upward relative to the infant to guide the infant to perform upward eye movement behavior.

Example 4

This embodiment provides a non-language interactive amblyopia detection or amblyopia early detection system. In this embodiment, except that the handheld terminal 100 controls the guidance module 200 with the help of a cloud server with typical ophthalmic data processing capabilities, other hardware is the same as the previous embodiment.

Based on the age and inclination of the infant, combined with the disruptive behaviors collected by the first data collection unit 230a integrated in the handheld terminal 100, the handheld terminal 100 can generate different programs for different disruptive behaviors generated by infants of different ages.

The visual tracking unit 220 integrated in the guidance module 200 is passively triggered to collect eye information of infants in a waking state. When the following situation occurs during the detection process, that is, when the data collected by the visual tracking unit 220 is the second category in which the detectable area disappears intermittently and irregularly, the handheld terminal 100 generates a corresponding program according to the pre-set age and inclination of the infant, as shown in FIG13. Specifically, based on the subject being in the first age range of milk-based food or the subject being in the second age range of carbohydrate-based food and his inclination is to play, the program includes one or more movable covers 212 that move while emitting light or sounding.

Based on the fact that the subject is in the second age range whose main food is carbohydrates and whose preference is food, food with a fragrance that attracts the subject's attention is placed in all the storage holes 211 .

When the time of dynamic changes in the subject's eyes collected by the visual tracking unit 220 exceeds a preset threshold and the data used to evaluate the subject's eye state lacks eye movement information of pupil changes of both eyes of infants and young children, the handheld terminal 100 obtains the subject's eye image.

When the static morphology of the subject's eyes matches the preset characteristics, the detection scheme includes a universal detection procedure, that is, based on the subject being in the first age range where milk is the main food or the subject being in the second age range where carbohydrates are the main food and their preference is to play, the handheld terminal 100 controls the light-emitting part 213 of the induction unit 210 to change from the first brightness to the second brightness, wherein the second brightness is higher than the first brightness.

The testing program also includes a focused testing procedure, which uses the preferential fixation method to test the infant's vision when the infant is presented with a static eye image with squinting eyes.

Example 5

This embodiment provides a non-language interactive amblyopia detection or amblyopia early detection system. In this embodiment, except that the handheld terminal 100 controls the guidance module 200 with the help of a cloud server with typical ophthalmic data processing capabilities, other hardware is the same as the previous embodiment.

Based on the age and inclination of the infant, combined with the disruptive behaviors collected by the first data collection unit 230a integrated in the handheld terminal 100, the handheld terminal 100 can generate different programs for different disruptive behaviors generated by infants of different ages.

The visual tracking unit 220 is passively triggered to collect eye information of infants in an awake state. When the following situation occurs during the detection process, that is, when the data collected by the visual tracking unit 220 is the third category without eye movement changes, the handheld terminal 100 generates a corresponding program according to the pre-set age and inclination of the infant. Specifically, based on the subject being in the second age range of carbohydrate-based food and his inclination being food, the program includes placing food with a fragrance that attracts the subject's attention in at least three storage holes 211 and the removable cover 212 is opened. When one of the storage holes 211 for placing food is opened, the light-emitting part 213 set on the top thereof emits light, as shown in FIG. 13 .

Based on the subject being in the second age range of a carbohydrate-based diet and having a preference for play or the first age range of a milk-based diet, the program includes a movable cover 212 being displaced while emitting light and sound.

Within a preset time threshold, the handheld terminal 100 generates an infant eye state assessment result based on the subject's eye data collected by the visual tracking unit 220 .

When some data in the evaluation result does not meet the preset threshold, for example, when the synchronous dilation diameters of the pupils of infants and young children are inconsistent, the handheld terminal 100 obtains the eye image of the subject and generates a further detection program in combination with the age and inclination of the subject, as shown in FIG13. The detection program refers to the above-mentioned embodiments 2 to 4.

It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation on the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The present invention specification contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", all of which indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as being required. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims (7)

1. An amblyopia early detection system comprises a guide module (200) provided with a vision tracking unit (220), a second data acquisition unit (230 b) for acquiring detection behaviors of a subject and an induction unit (210) for attracting attention of an infant subject,

It is characterized in that the method comprises the steps of,

The system further comprises a handheld terminal (100) controlling the guiding module (200), the handheld terminal (100) comprising a first data acquisition unit (230 a), the handheld terminal (100) controlling a vision tracking unit (220) of the guiding module (200) to acquire eye information when detecting an eye state, the eye information comprising a binocular inhibition degree and binocular vision for detecting the visual ability of an infant subject, wherein,

When the eyes of the subject are dynamically changed under the guidance of the guiding module (200), the program displayed by the inducing unit (210) is inserted in the detection process at the time point of the behavior with interference on the detection process based on the behavior with interference on the detection process fed back by the first data acquisition unit (230 a), the second data acquisition unit (230 b) and/or the visual tracking unit (220) so as to attract the attention of the subject, thereby inducing the eyes of the subject to move according to a preset mode,

When the first data acquisition unit (230 a), the second data acquisition unit (230 b) and/or the vision tracking unit (220) acquire data of behaviors of the subject, which interfere with detection, the handheld terminal (100) generates a corresponding program displayed by the induction unit (210) based on classification of the behaviors,

When the data collected by the vision tracking unit (220) is a first category in which the detectable region continuously disappears, the program comprises a step of controlling the induction unit (210) to generate an action of inducing the eyes of the subject to be opened or the head to be lifted at a set position;

When the data acquired by the first data acquisition unit (230 a), the second data acquisition unit (230 b) and/or the vision tracking unit (220) is in a second category in which the detectable region irregularly and intermittently disappears, the program comprises controlling the induction unit (210) to generate an action of inducing the capture of the subject at a set position;

When the data acquired by the vision tracking unit (220) is in a third category without eye movement change, the program includes controlling the induction unit (210) to display an object in a displacement state;

The hand-held terminal (100) is configured to:

When the time of the dynamic change of the eyes of the subject acquired by the vision tracking unit (220) exceeds a preset threshold value and the handheld terminal (100) does not generate a subject eye state evaluation result, generating a detection scheme which takes the displacement and the stay time of the induction unit (210) as regulating factors and comprises a universality detection program and/or an emphasis detection program by combining the static form of the eyes of the subject;

When the eye static morphology of the subject accords with a preset characteristic, the handheld terminal (100) generates a detection scheme comprising a universality detection program and an emphasis detection program generated based on the coincident characteristic;

When the eye static state of the subject is not consistent with the preset characteristics, the handheld terminal (100) generates a detection scheme comprising a universality detection program;

The detection scheme comprises a universal detection procedure, i.e. based on whether the subject is in a first age range based on milk or a second age range based on carbohydrates and which is inclined for play, the handheld terminal (100) controls the light emitting part (213) of the induction unit (210) to change from a first brightness to a second brightness, wherein the second brightness is higher than the first brightness;

The detection scheme also comprises a key detection program, namely, when the infant has an eye static image with squint eyes, the vision of the infant is detected by a preferential gazing method.

2. The amblyopia early detection system according to claim 1, wherein the procedure for attracting the attention of the subject by the induction unit (210) comprises at least three procedures referenced to the age and the tilt of the subject, wherein,

Based on the subject being in a first age range based on milk, the program comprises controlling the induction unit (210) to emit light or sound;

Based on the subject being in a second age range based on carbohydrates and being inclined to be food, the program comprises the step of inducing eye movement in the subject with the food having a flavor that attracts the attention of the subject attracting the attention of the subject;

Based on the subject being in a second age range based on carbohydrates and being inclined for play, the program comprises the step of inducing eye movements of the subject by attracting the subject's attention with the induction unit (210) having light emission and/or sound emission attracting the subject's attention.

3. A guidance module for an amblyopia early detection system according to claim 1 or 2, comprising a vision tracking unit (220) for locating and collecting eye information of a subject, a second data collection unit (230 b) for collecting eye information of the subject, an induction unit (210) for attracting attention of the subject, and a base (215) for receiving the vision tracking unit (220), the induction unit (210) and the second data collection unit (230 b) for attracting attention of the subject, characterized in that the induction unit (210) comprises storage holes (211) uniformly distributed inside a housing (240) and a movable cover (212) capable of moving on a surface where the storage holes (211) open,

The movable cover (212) is driven by magnetic force to move along a preset path.

4. A guiding module according to claim 3, characterized in that the bottom surface of the movable cover (212) is provided with a permanent magnet, that several slides (216) are provided in the base (215) in correspondence of the movement path of the movable cover (212), that in the slides (216) controllably movable electromagnets (218) are provided.

5. The guiding module according to claim 4, characterized in that the back side of the housing (240) is provided with an adjusting bracket (217) for adjusting the orientation angle of the guiding module (200), the adjusting bracket (217) comprising a support back plate (2171), a first bracket (2172) and a rotation axis (2173), the support back plate (2171) being intended to be mounted on the back side of the housing (240) being hinged with the first bracket (2172) placed on a support surface by means of the rotation axis (2173).

6. The guiding module according to claim 5, characterized in that the top of the movable cover (212) is provided with a light emitting part (213) attracting the attention of the subject.

7. An early detection method of amblyopia, which is applied to the early detection system of amblyopia according to claim 1 or 2, comprising the steps of:

capturing eye information of a subject while the subject is undergoing eye dynamic changes, wherein,

Based on the occurrence of the behavior that has an interference with the detection process, a program for controlling the device to exhibit attractive attention to the subject is inserted in the detection process at a point of time when the behavior that has an interference with the detection process occurs, so as to induce the eyes of the subject to move in a preset manner.