CN113712500B - Integrated self-response whole-course vision measurement system and measurement method thereof - Google Patents
Integrated self-response whole-course vision measurement system and measurement method thereof Download PDFInfo
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- CN113712500B CN113712500B CN202110967377.4A CN202110967377A CN113712500B CN 113712500 B CN113712500 B CN 113712500B CN 202110967377 A CN202110967377 A CN 202110967377A CN 113712500 B CN113712500 B CN 113712500B
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Abstract
The invention provides an integrated self-response whole-course vision measurement system and a measurement method thereof, wherein the system comprises: the vision measuring device is provided with an image display unit which is positioned in the vision measuring device and used for displaying a vision testing chart, a data processing unit which is used for processing data and controlling the vision measuring device to operate and is positioned in the vision measuring device, a mechanical control unit which is used for replacing lenses according to the operation result of the data processing unit so as to give various defocus amounts to a patient, and a response feedback unit which is used for feeding back to the data processing unit according to the response result and comparing the content display of the image display unit which affects the next time, wherein the measuring method comprises the following steps: s1, opening a device; s2, the left eye and the right eye are aligned to the vision observation port, and vision measurement is carried out; s3, checking eyesight from left to right; s4, vision detection; s5, obtaining a result. The problems that a doctor needs to match with vision examination in the whole course and the time is long in the whole course of vision and defocus curve measurement are solved, and the method has the advantages of simplicity in operation and time saving.
Description
Technical Field
The invention relates to the technical field of vision measurement, in particular to an integrated self-response whole-course vision measurement system and a measurement method thereof.
Background
The clinical routine vision test comprises far-distance vision, intermediate-distance vision and near-distance vision, the whole-course vision measurement and the drawing of defocus curves are a method for evaluating the performances of a plurality of different distance vision of a human eye, can be used as effective supplement beyond the far-distance vision measurement, the method can be widely applied to the postoperative evaluation of a crowd implanted with a multifocal intraocular lens or an adjustable intraocular lens after cataract surgery so as to obtain the whole-course vision performance of the crowd after the operation, or visually evaluate the adjustment performance of a certain type of intraocular lens in the eye, and calculate the intended adjustment amplitude of the intraocular lens.
In the conventional whole-course vision and defocus curve measurement process, an optometrist can simulate vision requirements of different distances by manually changing the diopter lens in front of the human eye to form different defocus, and the curve obtained by sequentially measuring the best vision under different defocus amounts with the defocus amount as an abscissa and tracing the best vision as an ordinate is the defocus curve.
Conventional through-the-loop vision and defocus eye tests generally take 30 minutes and more, which can involve multiple aspects of vision. Firstly, special measuring equipment, namely a comprehensive optometry instrument, is required in the measuring process, a long-distance optotype is projected in a space range of 2.5m to 5m to match with the inspection, and a special optotype is required to assist in completing the inspection process.
Disclosure of Invention
The invention solves the technical problems that: aiming at the technical defects existing in the prior art, the invention provides an integrated self-response whole-course vision measurement system and a measurement method thereof, wherein the inspection equipment is integrated, the required space is small, a vision inspector can complete inspection in a whole-course self-response mode, the assistance of an optometrist is not needed, the direction of a sighting target in the process is random, the memory effect is avoided, and the sighting target identification process adopts comparison type, so that the system has the characteristics of rapider and more convenience.
The technical scheme of the invention is as follows:
An integrated self-response whole-course vision measurement system and a measurement system thereof, comprising:
The front surface of the vision measuring device is provided with two vision observation ports corresponding to the left eye position and the right eye position of the vision tester respectively, a third display screen used for filling in the interpupillary distance of the vision tester is also arranged, a forehead used for fixing the forehead position of the vision tester is arranged above the vision observation ports,
An image display unit for displaying the vision testing chart and located within the vision measuring device, the image display unit comprising: a plurality of lenses with various diopters are arranged in the vision measuring device at the positions corresponding to the vision observation ports, a first display screen for displaying the vision testing chart is arranged behind the lenses,
A data processing unit for processing data and controlling operation of the vision measuring device and located within the vision measuring device, the data processing unit comprising: a PLC controller for calculating and storing the eyesight of the eyesight tester according to the lens power and the eyesight testing condition and positioned at the inner top of the eyesight measuring device,
A mechanical control unit for changing the lens according to the operation result of the data processing unit to give various defocus amounts to the patient, the mechanical control unit comprising: a first wheel disc which is fixedly provided with a plurality of lenses and corresponds to the position of the left visual observation port, a second wheel disc which is fixedly provided with a plurality of lenses and corresponds to the position of the right visual observation port, the rear of the first wheel disc is connected with the output end of a first motor, the other end of the first motor is connected with a first fixed block, the bottom of the first fixed block is connected with a transverse first screw rod through threads, the other end of the first screw rod is connected with a third motor which is fixedly arranged on the right inner wall of the visual measurement device, the rear of the second wheel disc is connected with the output end of a second motor, the other end of the second motor is connected with a second fixed block, the bottom of the second fixed block is connected with a transverse second screw rod through threads, the other end of the second screw rod is connected with a fourth motor which is fixedly arranged on the left inner wall of the visual measurement device, the first motor is electrically connected with a first intermediate relay, the second intermediate relay is electrically connected with a third motor, the fourth intermediate relay is electrically connected with the third motor, the first intermediate relay, the second intermediate relay, the third intermediate relay and the fourth intermediate relay are electrically connected with the fourth relay,
And a response feedback unit for feeding back the response result to the data processing unit and comparing the response result to influence the content display of the next image display unit.
Further, the response feedback unit includes: the vision measuring device is characterized in that an operation console is connected in front of the vision measuring device, four identification buttons for feeding back and testing the opening direction of the E-shaped optotype are arranged on the operation console, an adjusting button for adjusting a corresponding lens through feeding back the vision identification effect is arranged on one side of the four identification buttons, a mode selection button for selecting a vision detection mode is arranged on one side of the adjusting button, and the mode selection button, the adjusting button and the four identification buttons of the data processing unit are electrically connected with the PLC.
Further, a second display screen for displaying and scanning two-dimension codes is further arranged on one side of the outer surface of the vision measurement device, a switch button is arranged on the front surface of the vision measurement device, a vision tester can start the closing device through the switch button, and a vision test report is obtained through scanning the two-dimension codes on the second display screen, so that the vision measurement device can be used as a basis for follow-up accurate eye examination and treatment.
Further, the storage battery is further arranged at the inner bottom of the vision measuring device, and can supply power for the device, so that the cruising ability of the device is guaranteed.
Still further still be equipped with the black piece that is used for sheltering from the sight on first rim plate and the second rim plate respectively, black piece is used for when vision tester's one eye detects, shelters from other eyes.
An integrated self-response whole-course vision measurement method comprises the following steps:
S1, a vision tester presses a switch button on the front surface of the vision measuring device, the vision measuring device is started, the pupil distance of the vision tester is filled in through a third display screen, and a PLC (programmable logic controller) controls a third motor and a fourth motor to work through a third intermediate relay and a fourth intermediate relay respectively, so that the distance between a first rotary table and a second rotary table and the circle centers of lenses or black sheets at the positions corresponding to two vision observation ports is equal to the input pupil distance;
S2, the vision tester aligns the left eye and the right eye with the left eye and the right eye observation ports on the front surface of the vision measuring device and looks at a first display screen in the vision measuring device;
s3, the vision tester selects a single-eye detection mode and a double-eye detection mode through a mode selection button, wherein in the single-eye detection mode: the vision measuring device detects the vision of a vision tester in a left-to-right mode, when one side of the vision tester detects the vision of eyes, the other side of the vision tester is blocked by a black piece on the wheel disc, and in a binocular vision testing mode: the vision measuring device directly performs vision detection on both eyes of a vision detector, and the first wheel disc and the second wheel disc respectively select lenses with refractive defocus of +1.5D to align to corresponding vision observation ports;
s4, in the detection process, a first display screen displays a vision testing chart, each time, a large E-shaped visual target above and a small E-shaped visual target below are displayed, the directions of the small E-shaped visual targets at each position are random and different, a vision tester judges which position of the small E-shaped visual target is consistent with the large E above, and presses a button at a position corresponding to an identification button to answer, and according to the test process, the answer result and the previous answer result, the next visual target display and the rotation of a lens are controlled;
S5, after repeated times, the first display screen displays that vision testing is completed, a vision tester removes eyes, and the testing process can independently measure left eyes or right eyes or simultaneously measure the eyes.
Preferably, the step S4 further comprises: when the apparent blurring of the small E-shaped optotype below the visual field of the vision tester is smaller than the identifiable threshold value, the adjusting button on one side of the identifying button is pressed, the condition of the adjusting button is fed back to the data processing unit, and the data processing unit calculates and displays the next optotype or rotates to replace the front lens according to the testing process, which is equivalent to manually identifying the content of the vision testing chart.
Preferably, the vision testing logic of step S4 is:
The small E-shaped visual target with the same size can be recorded when the correct response is carried out for more than two times, and the subject can recognize the large visual target, so that the small E-shaped visual target displayed by the next visual target is reduced by one file, namely, the visual value of the corresponding visual target is reduced by 0.1log MAR unit, and the next display is carried out;
Recording that the test subject fails to recognize the large and small targets if the same size small E-shaped targets are required to be continuously used for more than two times, rotating the wheel disc to replace the lens to perform vision measurement of the next defocus amount if the previous-grade targets are recorded as the recognizable large and small targets, and increasing the vision value of the corresponding targets by 0.1log MAR unit and performing the next display if the previous-grade targets are not recorded as the recognizable large and small targets;
The vision tester presses the adjusting button, which is equivalent to the fact that the lower-level optotype responds incorrectly once;
When the wheel disc is rotated to replace a lens, the vision value corresponding to the minimum identifiable size optotype under the diopter defocus value and the diopter defocus amount is recorded by a standard logarithmic 5-minute recording method, the vision value ranges from 4.0 to 5.3, after the rotation is completed, one round of measurement is carried out again under the other diopter defocus amount, the size of the initial small E optotype is two steps larger than the minimum identifiable size optotype under the previous diopter defocus amount, namely the vision value of the corresponding optotype is increased by 0.2log MAR unit and displayed;
The end standard of the test process is that the minimum identifiable vision value is obtained under all refractive defocus amounts, and the refractive defocus amount corresponding to the lens is as follows: [ +1.5D, +1.0, +0.5,0D, -0.5D, -1.0D, -1.5D, -2.0D, -2.5D, -3.0D, -3.5D, -4.0D, black flakes ], initial test refractive defocus amount +1.5D.
Further preferably, the measuring method further comprises the steps of:
S6, after vision testing, the second display screen displays a two-dimensional code, and a vision tester can acquire and download a whole-course vision curve and a minimum identifiable vision value corresponding to each diopter defocus amount by scanning the two-dimensional code;
and S7, after the downloading of the vision diagnosis list is completed, the vision tester presses a switch button on the front surface of the vision measuring device to close the vision measuring device.
The beneficial effects of the invention are as follows:
(1) The self-response E-type optotype is tested by comparison, so that the use is simple, and the method is suitable for all people;
(2) Through one-time measurement, the whole-course optimal correcting vision under various defocus amounts can be obtained;
(3) The existing method is time-consuming, and requires a comprehensive optometry instrument and an optometrist to measure in a larger space range;
(4) The integrated type automatic measuring device is small in space, is within half a meter, can automatically measure, can be used for monocular measurement, can be used for binocular measurement.
Drawings
FIG. 1 is a block diagram of the whole vision measuring device of the present invention;
FIG. 2 is an interior elevation view of the vision measuring device of the present invention;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is a cross-sectional view taken along the direction B-B in FIG. 2;
FIG. 5 is a view of the vision test of the present invention;
The device comprises a 1-vision measuring device, a 2-switch button, a 3-vision observation port, a 4-recognition button, a 5-adjustment button, a 6-first display screen, a 7-first wheel disc, an 8-second wheel disc, a 9-lens, a 10-black sheet, an 11-storage battery, a 12-PLC (programmable logic controller), a 13-first motor, a 14-first intermediate relay, a 15-second motor, a 16-second intermediate relay, a 17-second display screen, a 18-mode selection button, a 19-third motor, a 20-first lead screw, a 21-fourth motor, a 22-second lead screw, a 23-first fixed block, a 24-second fixed block, a 25-balance, a 26-third intermediate relay and a 27-fourth intermediate relay.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two.
It should be understood that although the terms first, second, third, etc. may be used in describing … … in embodiments of the present invention, these … … should not be limited to these terms. These terms are only used to distinguish … …. For example, the first … … may also be referred to as the second … …, and similarly the second … … may also be referred to as the first … …, without departing from the scope of embodiments of the present invention.
Example 1
As shown in fig. 1, an integrated self-answering whole-course vision measurement system includes:
The vision measuring device 1, the front surface of the vision measuring device 1 is provided with two vision observation ports 3 which respectively correspond to the left eye position and the right eye position of a vision tester, a third display screen 28 for filling in the interpupillary distance of the vision tester, a forehead 25 for fixing the forehead position of the vision tester is arranged above the vision observation ports 3,
The front surface of the vision measuring device 1 is provided with a switch button 2, and the bottom inside the vision measuring device 1 is also provided with a storage battery 11 for supplying power to the whole device.
An image display unit for displaying an eye chart and located in the vision measuring device 1, the image display unit comprising: a plurality of lenses 9 with various diopters are arranged in the vision measuring device 1 and correspond to the vision observation port 3, and a first display screen 6 for displaying a vision testing chart is arranged behind the lenses 9.
A data processing unit for processing data and controlling the operation of the vision measuring device 1 and located within the vision measuring device 1, the data processing unit comprising: and a PLC controller 12 for calculating and storing the vision of the vision tester according to the lens 9 degree and the vision testing condition and positioned at the top in the vision measuring device 1.
As shown in fig. 2, the mechanical control unit that replaces the lens 9 to give the patient various defocus amounts according to the calculation result of the data processing unit, the mechanical control unit includes: the first wheel disc 7, which is fixedly provided with thirteen lenses 9 and corresponds to the position of the left side viewing port 3, the second wheel disc 8, which is fixedly provided with thirteen lenses 9 and corresponds to the position of the right side viewing port 3, is further provided with black sheets 10 for shielding the sight, as shown in fig. 3 and 4, the rear of the first wheel disc 7 is connected with the output end of the first motor 13, the other end of the first motor 13 is connected with a first fixed block 23, the bottom of the first fixed block 23 is connected with a first transverse screw rod 20 through threads, the other end of the first screw rod 20 is connected with a third motor 19 fixed on the right inner wall of the vision measuring device 1, the rear of the second wheel disc 8 is connected with the output end of the second motor 15, the other end of the second motor 15 is connected with a second fixed block 24, the bottom of the second fixed block 24 is connected with a second transverse screw rod 22 through threads, the other end of the second screw rod 22 is connected with a fourth motor 21 fixed on the left inner wall of the vision measuring device 1, the first motor 13 is electrically connected with a first intermediate motor 14, the second intermediate motor 15, the second intermediate motor 16, the third intermediate motor 26, the fourth intermediate motor 14, the fourth intermediate motor 26 and the fourth intermediate motor 27 are electrically connected with the fourth intermediate devices 27, the fourth intermediate motor 14 and the intermediate device 27, the fourth intermediate device and the fourth intermediate device 14 and the intermediate device 1 and the fourth intermediate device and 16 are electrically connected with the intermediate device.
And a response feedback unit for feeding back the response result to the data processing unit, and performing comparison to influence the content display of the next image display unit, wherein the response feedback unit comprises: the vision measuring device 1 is connected with an operation desk in front, four recognition buttons 4 for feeding back and testing the opening direction of the E-shaped optotype are arranged on the operation desk, an adjusting button 5 for adjusting a corresponding lens 9 through feeding back the vision recognition effect is arranged on one side of the four recognition buttons 4, and the adjusting button 5, the four recognition buttons 4 are electrically connected with a PLC (programmable logic controller) 12.
Example 2
The embodiment is an integrated self-response whole-course vision measurement method based on the system of the embodiment 1, which comprises the following steps:
s1, a vision tester presses a switch button 2 on the front surface of the vision measuring device 1, the vision measuring device 1 is started, the pupil distance of the vision tester is filled in through a third display screen 28, and a PLC (programmable logic controller) 12 controls a third motor 19 and a fourth motor 21 to work through a third intermediate relay 26 and a fourth intermediate relay 27 respectively, so that the distances between the centers of circles of black sheets 10 at the positions corresponding to the first rotary disk 7 and the second rotary disk 8 and the two vision observation ports 3 are equal to the input pupil distance;
S2, the vision tester aligns left and right eyes with left and right vision observation ports 3 on the front surface of the vision measuring device 1 and looks at a first display screen 6 inside the vision measuring device 1;
S3, the vision tester selects a monocular detection mode through a mode selection button 28, the vision measuring device 1 tests the vision of the vision tester in a left-to-right mode, and when one eye vision is tested, the vision of the other eye is blocked by the black sheet 10 on the wheel disc;
S4, in the detection process, a first display screen 6 displays a vision test chart, as shown in FIG. 5, each time a large E-shaped visual target above and four small E-shaped visual targets below are displayed, the directions of the small E-shaped visual targets at each position are random and different, a vision tester responds by judging which small E-shaped visual target at each position is consistent with the large E above and pressing a button at the corresponding position of an identification button 4, when the apparent blur of the small E-shaped visual target below in the vision tester is smaller than the identifiable threshold value of the small E-shaped visual target below, an adjustment button 5 at one side of the identification button 4 is pressed, the condition of the adjustment button 5 is fed back to a data processing unit, the data processing unit calculates and displays the next visual target or rotates to replace a front eye lens 9 according to the test process, and a mechanical control unit controls the next visual target display and the rotation of the lens 9 according to the test process, the response result and the previous response result;
s5, after repeated times, the first display screen 6 displays that vision testing is finished, and the eyes of a user are moved away.
Wherein, the vision detection logic of the step S4 is as follows:
The small E-shaped visual target with the same size can be recorded when the correct response is carried out for more than two times, and the subject can recognize the large visual target, so that the small E-shaped visual target displayed by the next visual target is reduced by one file, namely, the visual value of the corresponding visual target is reduced by 0.1log MAR unit, and the next display is carried out;
If the same size small E-shaped visual target is required to be continuously used for more than two times, recording that the identification of the size visual target fails, if the previous visual target is recorded as the identifiable size visual target, rotating the wheel disc replacement lens 9 to perform vision measurement of the next defocus amount, and if the previous visual target is not recorded as the identifiable size visual target, increasing the vision value of the corresponding visual target by 0.1log MAR unit and performing the next display;
the vision tester presses the adjusting button 5, which is equivalent to the response error once under the size optotype;
When the wheel disc is rotated to replace the lens 9, the vision value corresponding to the minimum identifiable size optotype under the diopter defocus value and the diopter defocus amount is recorded by a standard logarithmic 5-minute recording method, the vision value ranges from 4.0 to 5.3, after the rotation is completed, one round of measurement is carried out again under the other diopter defocus amount, the size of the initial small E optotype is two steps larger than the minimum identifiable size optotype under the previous diopter defocus amount, namely the vision value of the corresponding optotype is increased by 0.2log MAR unit and displayed;
The end criteria for the test procedure were that the minimum identifiable vision value was obtained at all refractive defocus amounts, and the corresponding refractive defocus amounts for lens 9 were: [ +1.5D, +1.0, +0.5,0D, -0.5D, -1.0D, -1.5D, -2.0D, -2.5D, -3.0D, -3.5D, -4.0D, black flakes ], initial test refractive defocus amount +1.5D.
Example 3
The embodiment is an integrated self-response whole-course vision measurement method based on the system of the embodiment 1, which comprises the following steps:
s1, a vision tester presses a switch button 2 on the front surface of the vision measuring device 1, the vision measuring device 1 is started, the pupil distance of the vision tester is filled in through a third display screen 28, and a PLC (programmable logic controller) 12 controls a third motor 19 and a fourth motor 21 to work through a third intermediate relay 26 and a fourth intermediate relay 27 respectively, so that the distances between the centers of circles of black sheets 10 at the positions corresponding to the first rotary disk 7 and the second rotary disk 8 and the two vision observation ports 3 are equal to the input pupil distance;
S2, the vision tester aligns left and right eyes with left and right vision observation ports 3 on the front surface of the vision measuring device 1 and looks at a first display screen 6 inside the vision measuring device 1;
S3, the vision tester selects a binocular detection mode through the mode selection button 28, wherein the binocular detection mode comprises the following steps: the vision measuring device 1 directly performs vision testing on both eyes of a vision tester, and the first wheel disc 7 and the second wheel disc 8 respectively select lenses with refractive defocus of +1.5D to align with the corresponding vision observation ports 3;
S4, in the detection process, a first display screen 6 displays a vision test chart, as shown in FIG. 5, each time a large E-shaped visual target above and four small E-shaped visual targets below are displayed, the directions of the small E-shaped visual targets at each position are random and different, a vision tester responds by judging which small E-shaped visual target at each position is consistent with the large E above and pressing a button at the corresponding position of an identification button 4, when the apparent blur of the small E-shaped visual target below in the vision tester is smaller than the identifiable threshold value of the small E-shaped visual target below, an adjustment button 5 at one side of the identification button 4 is pressed, the condition of the adjustment button 5 is fed back to a data processing unit, the data processing unit calculates and displays the next visual target or rotates to replace a front eye lens 9 according to the test process, and a mechanical control unit controls the next visual target display and the rotation of the lens 9 according to the test process, the response result and the previous response result;
s5, after repeated times, the first display screen 6 displays that vision testing is finished, and the eyes of a user are moved away.
Example 4
This embodiment differs from embodiment 1 in that:
And a second display screen for displaying and scanning the two-dimensional code is further arranged on one side of the outer surface of the vision measuring device.
Example 5
The embodiment is an integrated self-response whole-course vision measurement method based on the system of embodiment 4, comprising the following steps:
s1, a vision tester presses a switch button 2 on the front surface of the vision measuring device 1, the vision measuring device 1 is started, the pupil distance of the vision tester is filled in through a third display screen 28, and a PLC (programmable logic controller) 12 controls a third motor 19 and a fourth motor 21 to work through a third intermediate relay 26 and a fourth intermediate relay 27 respectively, so that the distances between the centers of circles of black sheets 10 at the positions corresponding to the first rotary disk 7 and the second rotary disk 8 and the two vision observation ports 3 are equal to the input pupil distance;
S2, the vision tester aligns left and right eyes with left and right vision observation ports 3 on the front surface of the vision measuring device 1 and looks at a first display screen 6 inside the vision measuring device 1;
S3, the vision tester selects a single-eye detection mode through the mode selection button 28, wherein the single-eye detection mode comprises the following steps: the vision measuring device 1 performs vision testing of a vision tester in a left-to-right manner, and when testing vision of one eye, the other eye is blocked by the black piece 10 on the roulette wheel, and in the binocular vision testing mode: the vision measuring device 1 directly performs vision testing on both eyes of a vision tester, and the first wheel disc 7 and the second wheel disc 8 respectively select lenses with refractive defocus of +1.5D to align with the corresponding vision observation ports 3;
S4, in the detection process, a first display screen 6 displays a vision test chart, as shown in FIG. 5, each time a large E-shaped visual target above and four small E-shaped visual targets below are displayed, the directions of the small E-shaped visual targets at each position are random and different, a vision tester responds by judging which small E-shaped visual target at each position is consistent with the large E above and pressing a button at the corresponding position of an identification button 4, when the apparent blur of the small E-shaped visual target below in the vision tester is smaller than the identifiable threshold value of the small E-shaped visual target below, an adjustment button 5 at one side of the identification button 4 is pressed, the condition of the adjustment button 5 is fed back to a data processing unit, the data processing unit calculates and displays the next visual target or rotates to replace a front eye lens 9 according to the test process, and a mechanical control unit controls the next visual target display and the rotation of the lens 9 according to the test process, the response result and the previous response result;
S5, after repeated times, the first display screen 6 displays that vision testing is finished, a vision tester removes eyes, and the testing process can independently measure left eyes or right eyes or simultaneously measure the eyes;
s6, after vision testing, the second display screen 17 displays a two-dimensional code, and a vision tester can acquire and download a whole-course vision curve and a minimum identifiable vision value corresponding to each diopter defocus amount by scanning the two-dimensional code;
and S7, after the downloading of the vision diagnosis list is completed, the vision tester presses a switch button 2 on the front surface of the vision measuring device 1 to close the vision measuring device 1.
Example 6
The embodiment is an integrated self-response whole-course vision measurement method based on the system of embodiment 4, comprising the following steps:
s1, a vision tester presses a switch button 2 on the front surface of the vision measuring device 1, the vision measuring device 1 is started, the pupil distance of the vision tester is filled in through a third display screen 28, and a PLC (programmable logic controller) 12 controls a third motor 19 and a fourth motor 21 to work through a third intermediate relay 26 and a fourth intermediate relay 27 respectively, so that the distances between the centers of circles of black sheets 10 at the positions corresponding to the first rotary disk 7 and the second rotary disk 8 and the two vision observation ports 3 are equal to the input pupil distance;
S2, the vision tester aligns left and right eyes with left and right vision observation ports 3 on the front surface of the vision measuring device 1 and looks at a first display screen 6 inside the vision measuring device 1;
S3, the vision tester selects a binocular detection mode through the mode selection button 28, wherein the binocular detection mode comprises the following steps: the vision measuring device 1 directly performs vision testing on both eyes of a vision tester, and the first wheel disc 7 and the second wheel disc 8 respectively select lenses with refractive defocus of +1.5D to align with the corresponding vision observation ports 3;
S4, in the detection process, a first display screen 6 displays a vision test chart, as shown in FIG. 5, each time a large E-shaped visual target above and four small E-shaped visual targets below are displayed, the directions of the small E-shaped visual targets at each position are random and different, a vision tester responds by judging which small E-shaped visual target at each position is consistent with the large E above and pressing a button at the corresponding position of an identification button 4, when the apparent blur of the small E-shaped visual target below in the vision tester is smaller than the identifiable threshold value of the small E-shaped visual target below, an adjustment button 5 at one side of the identification button 4 is pressed, the condition of the adjustment button 5 is fed back to a data processing unit, the data processing unit calculates and displays the next visual target or rotates to replace a front eye lens 9 according to the test process, and a mechanical control unit controls the next visual target display and the rotation of the lens 9 according to the test process, the response result and the previous response result;
s5, after repeated times, the first display screen 6 displays that vision testing is finished, and a vision tester removes eyes;
s6, after vision testing, the second display screen 17 displays a two-dimensional code, and a vision tester can acquire and download a whole-course vision curve and a minimum identifiable vision value corresponding to each diopter defocus amount by scanning the two-dimensional code;
and S7, after the downloading of the vision diagnosis list is completed, the vision tester presses a switch button 2 on the front surface of the vision measuring device 1 to close the vision measuring device 1.
Claims (5)
1. An integrated self-answering whole-course vision measurement system, comprising:
the vision measuring device (1), the front surface of the vision measuring device (1) is provided with two vision observation ports (3) which respectively correspond to the left eye position and the right eye position of a vision tester, the vision measuring device is also provided with a third display screen used for filling in the interpupillary distance of the vision tester, the upper part of the vision observation ports (3) is provided with a forehead (25) used for fixing the forehead position of the vision tester,
An image display unit for displaying an eye chart and located within an eye measurement device (1), the image display unit comprising: a plurality of lenses (9) with various diopters are arranged in the vision measuring device (1) corresponding to the vision observation port (3), a first display screen (6) for displaying the vision testing chart is arranged behind the lenses (9),
A data processing unit for processing data and controlling the operation of the vision measuring device (1) and located within the vision measuring device (1), the data processing unit comprising: a PLC controller (12) for calculating and storing the vision of the vision tester according to the degree of the lens (9) and the vision testing condition and positioned at the inner top of the vision measuring device (1),
A mechanical control unit for replacing the lens (9) according to the calculation result of the data processing unit to give various defocus amounts to the patient, the mechanical control unit comprising: a plurality of first wheel discs (7) corresponding to the positions of Zuo Ceshi force observation openings (3) are fixed, a plurality of second wheel discs (8) corresponding to the positions of the right force observation openings (3) are fixed, the rear of each first wheel disc (7) is connected with the output end of a first motor (13), the first wheel discs (7) and the second wheel discs (8) are respectively provided with black sheets (10) for shielding vision, the testing process can independently measure left eyes or right eyes and can also simultaneously measure double eyes, the other end of each first motor (13) is connected with a first fixed block (23), the bottom of each first fixed block (23) is connected with a first transverse screw rod (20) through threads, the other end of each first screw rod (20) is connected with a third motor (19) fixed on the right inner wall of a vision measuring device (1), the rear of each second wheel disc (8) is connected with the output end of a second motor (15), the other end of each second motor (15) is connected with a second motor (24) through threads, the other end of each second motor (15) is connected with a second electric motor (24) is connected with a second transverse screw rod (22) through threads, the other is connected with a second electric device (14) at the bottom of each second fixed block (23), the second motor (15) is electrically connected with a second intermediate relay (16), the third motor (19) is electrically connected with a third relay (26), the fourth motor (21) is electrically connected with a fourth intermediate relay (27), the first, second, third and fourth intermediate relays (14, 16, 26, 27) are fixed on the inner wall of the front side of the vision measuring device (1), the first, second, third and fourth intermediate relays (14, 16, 26, 27) are electrically connected with the PLC (12),
And a response feedback unit for feeding back the response result to the data processing unit, and performing comparison to influence the content display of the next image display unit, wherein the response feedback unit comprises: the vision measuring device (1) is connected with an operation table in front, four identification buttons (4) for feeding back the opening direction of the E-shaped optotype are arranged on the operation table, the four identification buttons (4) are positioned at one side of each identification button (4) and used for adjusting the corresponding lens (9) through feeding back the vision identification effect, a mode selection button (18) for selecting a vision detection mode is arranged at one side of each adjustment button (5), the mode selection button (18), the adjustment button (5) and the four identification buttons (4) of the data processing unit are electrically connected with the PLC (12), when the small E-shaped optotype appearing fuzzy in the vision of a vision tester is smaller than the identifiable threshold value of the small E-shaped optotype, the adjustment button (5) at one side of each identification button (4) is pressed, the adjustment button (5) feeds back the situation to the data processing unit, the data processing unit calculates and displays the next optotype or rotates to replace the front lens (9) according to the testing process,
The vision testing logic is as follows:
The small E-shaped visual target with the same size can be recorded when the correct response is carried out for more than two times, and the subject can recognize the large visual target, so that the small E-shaped visual target displayed by the next visual target is reduced by one file, namely, the visual value of the corresponding visual target is reduced by 0.1log MAR unit, and the next display is carried out;
If the same size small E-shaped visual target is required to be continuously responded for more than two times, recording that the identification of the size visual target of a subject fails, if the previous visual target is recorded as the identifiable size visual target, rotating a wheel disc replacement lens (9) to perform vision measurement of the next defocus amount, and if the previous visual target is not recorded as the identifiable size visual target, increasing the vision value of the corresponding visual target by 0.1log MAR unit and performing the next display;
the vision tester presses the adjusting button (5), and the vision tester responds to the error once under the size of the vision standard;
When the rotary wheel disc is used for replacing the lens (9), the vision value corresponding to the minimum identifiable size vision mark of the refraction defocus value recorded under the refraction defocus amount is recorded by a standard logarithmic 5-minute recording method, the vision value ranges from 4.0 to 5.3, after the rotation is completed, one round of measurement is carried out again under the other refraction defocus amount, the size of the initial small E vision mark is two steps larger than the minimum identifiable size vision mark under the previous refraction defocus amount, namely the vision value of the corresponding vision mark is increased by 0.2log MAR unit and displayed;
The end standard of the test process is that the minimum identifiable vision value is obtained under all refractive defocus amounts, and the refractive defocus amount corresponding to the lens (9) is as follows: [ +1.5D, +1.0, +0.5,0D, -0.5D, -1.0D, -1.5D, -2.0D, -2.5D, -3.0D, -3.5D, -4.0D, black flakes ], initial test refractive defocus amount +1.5D.
2. The integrated self-response whole-course vision measurement system according to claim 1, wherein a second display screen (17) for displaying a scanning two-dimensional code is further arranged on one side of the outer surface of the vision measurement device (1), and a switch button (2) is arranged on the front surface of the vision measurement device (1).
3. An integrated self-answering whole-course vision measurement system according to claim 1, characterized in that the inner bottom of the vision measurement device (1) is also provided with a storage battery (11).
4. A method of making a one-piece self-answering global vision measurement using the system of any one of claims 1-3, comprising the steps of:
S1, a vision tester presses a switch button (2) on the front surface of the vision measuring device (1), the vision measuring device (1) is started, the pupil distance of the vision tester is filled in through a third display screen, and a PLC (12) controls a third motor (19) and a fourth motor (21) to work through a third intermediate relay (26) and a fourth intermediate relay (27) respectively, so that the distance between the centers of a lens (9) or a black sheet (10) at the positions corresponding to two vision observation ports (3) and a first rotary disk (7) and a second rotary disk (8) is equal to the input pupil distance;
S2, the vision tester aims the left eye and the right eye at the left vision observation port and the right vision observation port (3) on the front surface of the vision measuring device (1) and looks at a first display screen (6) in the vision measuring device (1);
S3, a vision tester selects a single-eye detection mode and a double-eye detection mode through a mode selection button (18), wherein in the single-eye detection mode: the vision measuring device (1) detects the vision of a vision detector in a left-to-right manner, and when detecting the vision of one eye, the vision of the other eye is blocked by a black sheet (10) on the wheel disc, and in a binocular detection mode: the vision measuring device (1) directly performs vision detection on eyes of a vision detector, and the first wheel disc (7) and the second wheel disc (8) respectively select lenses with the refractive defocus of +1.5D to be aligned with the corresponding vision observation ports (3);
S4, in the detection process, a first display screen (6) displays a vision test chart, each time a large E-shaped visual target above and a small E-shaped visual target below are displayed, the directions of the small E-shaped visual targets at each position are random and different, a vision tester judges which position of the small E-shaped visual target is consistent with the large E above, presses a button at the corresponding position of an identification button (4) to answer, controls the display of the next visual target and the rotation of a lens (9) according to the test progress, the answer result and the previous answer result, presses an adjustment button (5) at one side of the identification button (4) when the apparent blur of the small E-shaped visual target below in the vision tester is smaller than the identifiable threshold value, the adjustment button (5) feeds back the situation to a data processing unit, the data processing unit calculates and displays the next visual target or rotates to replace the lens (9) according to the test progress,
The vision testing logic is as follows:
The small E-shaped visual target with the same size can be recorded when the correct response is carried out for more than two times, and the subject can recognize the large visual target, so that the small E-shaped visual target displayed by the next visual target is reduced by one file, namely, the visual value of the corresponding visual target is reduced by 0.1log MAR unit, and the next display is carried out;
If the same size small E-shaped visual target is required to be continuously responded for more than two times, recording that the identification of the size visual target of a subject fails, if the previous visual target is recorded as the identifiable size visual target, rotating a wheel disc replacement lens (9) to perform vision measurement of the next defocus amount, and if the previous visual target is not recorded as the identifiable size visual target, increasing the vision value of the corresponding visual target by 0.1log MAR unit and performing the next display;
the vision tester presses the adjusting button (5), and the vision tester responds to the error once under the size of the vision standard;
When the rotary wheel disc is used for replacing the lens (9), the vision value corresponding to the minimum identifiable size vision mark of the refraction defocus value recorded under the refraction defocus amount is recorded by a standard logarithmic 5-minute recording method, the vision value ranges from 4.0 to 5.3, after the rotation is completed, one round of measurement is carried out again under the other refraction defocus amount, the size of the initial small E vision mark is two steps larger than the minimum identifiable size vision mark under the previous refraction defocus amount, namely the vision value of the corresponding vision mark is increased by 0.2log MAR unit and displayed;
The end standard of the test process is that the minimum identifiable vision value is obtained under all refractive defocus amounts, and the refractive defocus amount corresponding to the lens (9) is as follows: [ +1.5D, +1.0, +0.5,0D, -0.5D, -1.0D, -1.5D, -2.0D, -2.5D, -3.0D, -3.5D, -4.0D, black flakes ], initial test refractive defocus amount +1.5D;
s5, after repeated times, the first display screen (6) displays that vision testing is finished, a vision tester removes eyes, and the testing process can independently measure left eyes or right eyes or simultaneously measure the eyes.
5. The integrated self-answering whole-range vision measurement method according to claim 4, wherein the measurement method further comprises the steps of:
s6, after vision detection, a second display screen (17) displays a two-dimensional code, and a vision detector can acquire and download a whole-course vision curve and a minimum identifiable vision value corresponding to each diopter defocus amount by scanning the two-dimensional code;
And S7, after the downloading of the vision diagnosis list is completed, the vision tester presses a switch button (2) on the front surface of the vision measuring device (1) to close the vision measuring device (1).
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