CN219846541U - Long and short distance concealed inclination measuring card - Google Patents

Abstract

The utility model discloses a long-short distance concealed inclination measuring card, which comprises a hard card with a three-fold structure, wherein the hard card is formed by sequentially connecting a left card, a middle card and a right card, and can be unfolded or folded freely; a through hole is formed in the middle of the middle card, a first cross scale mark line for short-distance implicit inclination measurement is arranged on one surface of the middle card, and a second cross scale mark line for long-distance implicit inclination measurement is arranged on the other surface of the middle card; the two cross scale marks comprise a vertical crossed horizontal scale and a vertical scale, the cross center point is aligned with the through hole, the horizontal scale is gradually increased to the horizontal direction by taking the through hole as a starting point, and the vertical scale is gradually increased to the vertical direction by taking the through hole as a starting point; the horizontal scales of the twenty-first scale marks continuously penetrate through the three cards of the left card, the middle card and the right card; an indicator lamp is detachably arranged in the through hole. The tool can measure not only the close-range concealed inclination but also the long-range concealed inclination, is simple to operate and low in cost, and is suitable for screening different crowds.

Description

Far and near phoria measurement card

Technical field

The utility model relates to the technical field of optometry detection equipment, in particular to a far and near phoria measurement card.

Background technique

The incidence of phoria in our country is about 90% in the general population. Most phoria is a normal physiological state and does not require special treatment. However, 5 to 20% of phoria is closely related to abnormal binocular vision function and can be serious. Patients may experience symptoms of visual fatigue, which affects normal learning and life. And the measurement of phorophoria is a must-check item in the professional field of optometry, and has very important clinical significance for myopia prevention and control, diagnosis of abnormal binocular vision function, and identification of strabismus. Therefore, a simple, easy-to-operate, fast, and highly repeatable inspection method is a must.

Currently, in the professional field of optometry, the Von Graefe method, the Maddox rod method and the prism neutralization method are the three most commonly used methods for measuring phoria. However, they all have certain shortcomings. The Von Graefe method needs to be performed on a comprehensive refractometer, and the use of a comprehensive refractometer will bring potential equipment aggregation and equipment adjustment to the eye being examined, interfering with the accuracy of the inspection results. nature, and the inspection steps are complex and cumbersome, requiring a certain degree of understanding and cooperation from the subjects, and are not suitable for all subjects; the Maddox rod method uses a pen light or light spot as the gaze target, and lacks the ability to monitor the subjects The adjustment control of the eye, and the adjustment is linked to the vergence and convergence, so it will affect the accuracy of the inspection results. Usually only qualitative inspection is performed rather than quantitative inspection; the prism neutralization method requires the examiner to judge whether the eye being inspected rotates or not. Whether it has been neutralized, and the deflection or rotation below 4pd may not be observed by the examiner, so it is limited by the examiner's judgment and experience, and the prism array used is a step prism, and the prism degree is not continuous. are arranged one by one, so the inspection results cannot be accurate.

Utility model content

The purpose of this utility model is to overcome the above-mentioned shortcomings of the prior art and provide a far and near phoria measurement card. This tool can measure both near and distance phoria, and can measure central vision through the card. The standard controls the adjustment of the examined eye and improves the accuracy of the measurement results; at the same time, it is simple to make, simple and practical in structure, low cost, light and easy to move. It is easy for the examiner to operate and the examinee to understand. It has high repeatability and is suitable for inspections by various groups of people. and multi-population screening.

The utility model is realized through the following technical solutions: a distance and distance phoria measurement card, which includes a hard card. The hard card is composed of a left card, a middle card and a right card that are sequentially connected and can be freely expanded or folded. Three-fold structure; there is a through hole in the center of the middle card, and one side of the middle card is provided with a first cross scale mark for measuring close-range occlusion, and the first cross scale mark includes a vertically crossing third A horizontal scale and a first vertical scale, the intersection center point is aligned with the through hole, the first horizontal scale increases in the horizontal direction with the through hole as a starting point, and the first vertical scale starts with the through hole as a starting point Increasingly in the vertical direction; the other side of the middle card is provided with a second cross scale mark for long-distance occlusion measurement, the second cross scale mark includes a vertically crossed second horizontal scale and a second vertical scale, The intersection center point is aligned with the through hole, the second horizontal scale increases in the horizontal direction with the through hole as the starting point, and the second vertical scale increases in the vertical direction with the through hole as the starting point; The horizontal scale continuously runs through the three cards of the left card, the middle card and the right card; an indicator light is detachably installed in the through hole, and the light-emitting surface of the indicator light faces the subject.

One side of the hard card of this tool is used for near-distance phoria measurement, and the other side is used for long-distance phoria measurement. When used for near-distance phoria measurement, half unfold the left card and the right card and immediately Place it on the examination table for inspection; when used for long-distance phesotropia measurement, the hard card needs to be fully unfolded and can be hung on a distant wall for inspection; when used, the indicator light is embedded in the through hole, and the luminous surface Toward the subject.

In the first cross scale markings, the equidistant intervals between the marking lines of the first horizontal scale are 8mm, and the equidistant intervals between the marking lines of the first vertical scale are 8mm; in the second cross scale markings, The marking lines of the second horizontal scale are at equidistant intervals of 3 cm, and the marking lines of the second vertical scale are at equidistant intervals of 3 cm.

In the first cross scale mark, the right mark of the first horizontal scale is dark red, the scale and numbers are set above the mark, and the right end of the scale mark is provided with a mark for marking the direction of phoria. The first mark; the left mark of the first horizontal scale is dark blue, the scale and numbers are set below the mark, and the second mark for marking the cryptic direction is set at the left end above the scale mark; the The upper side marking line of the first vertical scale is black, the scale and numbers are set on the left side of the marking line, and the upper right end of the scale marking line is provided with a third mark for marking the oblique direction; the lower side of the first vertical scale The marking line is black, and its scale and numbers are set on the right side of the marking line. There is a fourth mark on the left lower end of the scale marking line for marking the oblique direction.

In the second cross scale mark, the right side mark of the second horizontal scale is dark red, the scale and numbers are set above the mark, and the right end of the scale mark is provided with a mark for marking the direction of phoria. The fifth mark; the left mark of the second horizontal scale is dark blue, the scale and numbers are set below the mark, and a sixth mark is provided at the left end above the scale mark for marking the cryptic direction; the The upper side marking line of the second vertical scale is black, and its scale and numbers are set on the left side of the marking line. The upper right end of the scale marking line is provided with a seventh mark for marking the oblique direction; the lower side of the second vertical scale The marking line is black, and its scale and numbers are set on the right side of the marking line. There is an eighth mark on the left lower end of the scale marking line for marking the direction of the oblique direction.

The first cross scale mark divides one side of the middle card into four quadrants, and each quadrant is provided with a letter mark near the through hole; the second cross scale mark divides the middle card One side is divided into four quadrants, and each quadrant is provided with a letter mark near the through hole.

Round holes are respectively provided at both ends of the upper part of the middle card, and a hanging rope for hanging the measuring card on the wall is passed through the round hole.

The middle card has a rectangular structure. The structures of the left card and the right card are symmetrical. They are both right-angled trapezoidal structures. The lower bottom of the trapezoidal structure is connected to the side of the middle card as one body. The two right-angled trapezoidal structures are The hypotenuses are located on the lower side of the card; the specification of the middle card is 210mm*290mm; the lower bottom of the trapezoidal structure is 210mm, the upper bottom is 113mm, and the right-angle waist is 280mm.

The hard card is made of PVC material with a thickness of 1.0 mm, and the diameter of the through hole is 2 mm.

A wire, a power supply and a switch are connected to the indicator light; the power supply and switch are connected to the indicator lamp through wires.

The middle card is also provided with a first measurement distance reminder mark and a second measurement distance reminder mark; the first measurement distance reminder mark is located at the lower left corner of one side of the middle card where the first cross scale mark is located, The second measurement distance reminder mark is located at the lower left corner of one side of the middle card where the second cross scale mark is located.

Compared with the existing technology, the advantages of the present utility model are that the distance and distance phoria measurement card is simple to make, has a simple and practical structure, is low in cost, is lightweight, and is easy to move. One side of the card is used for short-distance phesotropia measurement, and can be used for horizontal and vertical phesotropia measurements. The measurement card itself is designed to be used standing on a table, without the examiner or subject holding it, making it convenient and easy to control the inspection distance. Accuracy; the independently movable indicator light can be embedded in the central through hole, eliminating the need for the examiner or subject to hold the light source, making the operation simple and practical. The other side of the card is for long-distance phesotropia measurement. After unfolding, it can be hung directly on the wall without the examiner needing to hold it. One card can be used for two purposes, and is small in size and light in weight, making it easy to move and use outside. Letter logos are added around the small circular through hole in the center of the measurement card, which is more conducive to controlling the adjustment of the eye being inspected during measurement. When the adjustment is stable, the accuracy of the test results can be increased.

Description of the drawings

Figure 1 is a schematic structural diagram of one side of the embodiment of the present utility model;

Figure 2 is a schematic structural diagram of the other side of the embodiment of the present utility model;

Figure 3 is a frame diagram of the indicator light and circuit according to the embodiment of the present utility model;

Figure 4 is a schematic structural diagram of the embodiment of the present utility model standing on a table.

The meaning of the reference marks in the figure: 100, first cross scale mark; 200, through hole; 300, second cross scale mark; 400, round hole; 500, indicator light; 600, power supply and switch; 700, wire.

Detailed ways

The content of the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.

Example

Referring to Figures 1 to 4, a card for measuring distance and distance phoria is shown, which includes a hard card. The hard card is composed of a left card, a middle card and a right card that are sequentially connected to form a three-fold structure that can be freely expanded or folded; There is a through hole 200 in the center of the middle card. One side of the middle card is provided with a first cross scale mark 100 for measuring close range occlusion. The first cross scale mark 100 includes a vertically crossed first horizontal scale and a first vertical scale. scale, the cross center point is aligned with the through hole 200, the first horizontal scale takes the through hole 200 as the starting point and increases in the horizontal direction, and the first vertical scale takes the through hole 200 as the starting point and increases in the vertical direction; the other side of the middle card has a long distance The second cross-scale mark 300 for phoria measurement, the second cross-scale mark 300 includes a second horizontal scale and a second vertical scale that intersect perpendicularly, the intersection center point is aligned with the through hole 200, and the second horizontal scale is aligned with the through hole. 200 is the starting point and increases in the horizontal direction, and the second vertical scale takes the through hole 200 as the starting point and increases in the vertical direction; the second horizontal scale continuously runs through the three cards on the left card, the middle card and the right card; the through hole 200 can be detachably installed. There is an indicator light 500, and the luminous surface of the indicator light 500 faces the subject.

One side of the hard card of this tool is used for near-distance phoria measurement, and the other side is used for long-distance phoria measurement. When used for near-distance phoria measurement, half unfold the left card and the right card and immediately Place it on the examination table for inspection; when used for long-distance phesotropia measurement, the hard card needs to be fully unfolded and can be hung on a remote wall for inspection; when used, the indicator light 500 is embedded in the through hole 200. The luminous surface faces the subject.

In the first cross scale markings 100, the marking lines of the first horizontal scale are equidistantly spaced at 8 mm, and the marking lines of the first vertical scale are equally spaced at 8 mm; in the second cross scale markings 300, the markings of the second horizontal scale are equidistantly spaced. The lines are equidistantly spaced at 3cm intervals, and the reticles of the second vertical scale are equidistantly spaced at 3cm intervals.

In the first cross scale mark 100, the right mark of the first horizontal scale is dark red, the scale and numbers are set above the mark, and a first mark for marking the direction of phoria is set below the right end of the scale mark. , the first mark is "endophoria"; the left marking line of the first horizontal scale is dark blue, its scale and numbers are set below the marking line, and the left end above the scale mark is set with a third mark for marking the direction of phoria. Two marks, the second mark is "external phoria"; the upper marking line of the first vertical scale is black, its scale and numbers are set on the left side of the marking line, and there is a mark on the upper right side of the scale marking line to mark the direction of phoria. The third mark, the third mark is "lower right phoria"; the lower marking line of the first vertical scale is black, the scale and numbers are set on the right side of the marking line, and the lower left end of the scale marking line is used to mark phoria. The fourth identification of the direction, the fourth identification is "upper right oblique".

In the second cross scale mark 300, the right mark of the second horizontal scale is dark red, the scale and numbers are set above the mark, and a fifth mark for marking the direction of phoria is set below the right end of the scale mark. , the fifth mark is "endophoria"; the left marking line of the second horizontal scale is dark blue, the scale and numbers are set below the marking line, and the third mark is set on the left end above the scale mark to mark the direction of phoria. Six marks, the sixth mark is "outer phoria"; the upper marking line of the second vertical scale is black, its scale and numbers are set on the left side of the marking line, and there is a mark on the upper right side of the scale marking line for marking the direction of phoria. The seventh mark, the seventh mark is "lower right phoria"; the lower marking line of the second vertical scale is black, its scale and numbers are set on the right side of the marking line, and the lower left end of the scale marking line is used to mark phoria. The eighth sign of the direction, the eighth sign is "upper right oblique".

The first cross scale mark 100 divides one side of the middle card into four quadrants, and each quadrant is provided with a letter mark for marking the quadrant in a position close to the through hole 200; the second cross scale mark 300 divides one side of the middle card into four quadrants. There are four quadrants, and each quadrant is provided with a letter mark for marking the quadrant in a position close to the through hole 200 . In this embodiment, the first, second, third, and fourth quadrants on both sides of the middle card are marked with letters a, b, c, and d.

Round holes 400 are respectively provided at both ends of the upper part of the middle card, and a hanging rope for hanging the measuring card on the wall is inserted through the round holes 400 .

The middle card is a rectangular structure. The structures of the left card and the right card are symmetrical. They are both right-angled trapezoidal structures. The lower bottom of the trapezoidal structure is connected to the side of the middle card. The hypotenuses of the two right-angled trapezoidal structures are located on the lower side of the card. ; The specification of the middle card is 210mm*290mm; the lower base of the trapezoidal structure is 210mm, the upper base is 113mm, and the right-angle waist is 280mm.

The hard card is a card made of PVC material with a thickness of 1.0 mm, and the diameter of the through hole 200 is 2 mm.

The indicator light 500 is connected to a wire 700, a power supply and a switch 600; the power supply and the switch 600 are connected to the indicator light 500 through the wire 700.

The middle card is also provided with a first measurement distance reminder mark and a second measurement distance reminder mark; the first measurement distance reminder mark is located at the lower left corner of one side of the middle card where the first cross scale mark 100 is located, and the second measurement distance reminder mark is located at The second cross-scale mark 300 is located at the lower left corner of one side of the middle card. In this embodiment, the first measurement distance reminder mark is a "detection distance: 40cm" mark, and the second measurement distance reminder mark is a "detection distance: 3m" mark.

The working process of this embodiment is:

1. When measuring near-horizontal phoria, when the refractive error of both eyes of the subject is completely corrected, place the first cross scale mark 100 of the measurement card horizontally 40cm in front of the subject's eyes, with the left card and the right card half Fold it and stand it on the table, embed the activity indicator light 500 in the through hole 200, the subject wears the audition frame, and places a horizontal Maddox rod in front of his right eye. At this time:

(1) The examiner covers the subject’s left eye and confirms that the subject sees a vertical line

(2) The examiner covers the right eye of the subject and confirms that the subject sees the indicator light 500, letters, and numbers on the measurement card.

(3) The subject looks at the indicator light 500 in the central through hole 200 of the measurement card with both eyes, and confirms that the subject sees the indicator light 500, letters, numbers and a vertical line at the same time on the measurement card.

(4) The examiner covers the right eye of the subject, guides the subject to look at the indicator light 500 in the center of the measurement card, and keeps the surrounding letters ABCD clear. When the examiner removes the covering, he reports which side the vertical line passes through. scale.

(5) If the subject reports that the vertical line is to the right of the 0 scale, it is said to be an endophoria; if it is to the left of the 0 scale, it is said to be an exophoria. The scale value passed by the vertical line is the near horizontal slant.

(6) When the subject looks at the indicator light 500 in the central through hole 200 of the measurement card with both eyes, if only the indicator light 500 is seen, the subject's phoria may exceed the range of the measurement card, or the right eye may be suppressed; if only the indicator light 500 is seen, When a vertical line is seen, the subject's left eye is suppressed.

2. When measuring the vertical phoria at close range, place a vertical Maddox rod in front of the right eye, and the rest is the same as described in 1. During the examination, cover the subject's left eye and confirm that the subject sees a horizontal line. The examiner covers the right eye of the subject, guides the subject to look at the indicator light 500 in the center of the measurement card, and keeps the surrounding letters ABCD clear. When the examiner removes the cover, he reports which scale the horizontal line passes through. If the subject reports that the horizontal line is above the 0 scale, it is said to be right lower phoria; if it is below the 0 scale, it is said to be right upper phoria. The scale value that the horizontal line passes through is the near vertical phoria. If only the indicator light 500 is seen, the subject's phoria may be beyond the range of this measurement card, or the right eye may be suppressed; if only the horizontal line is seen, the subject's left eye may be suppressed.

3. When measuring long-distance phoria, the second cross scale surface of the measurement card is placed horizontally 3m in front of the subject's eyes. The left card and the right card are fully unfolded into a flat surface, and hung on the wall through the hanging rope above. A horizontal Maddox rod is placed in front of the examiner's right eye, and the rest is the same as described in 1. During the examination, cover the subject's left eye and confirm that the subject sees a vertical line. The examiner covers the right eye of the subject, guides the subject to look at the indicator light 500 in the center of the measurement card, and keeps the surrounding letters ABCD clear. When the examiner removes the cover, he reports which scale the vertical line passes through. If the subject reports that the vertical line is to the right of the 0 scale, it is said to be an esophoria, and to the left of the 0 scale, it is said to be an exophoria. The scale value that the vertical line passes through is the long-distance horizontal obliqueness. If only the indicator light 500 is seen, the subject's phoria may be beyond the range of this measurement card, or the right eye may be suppressed; if only the vertical line is seen, the subject's left eye may be suppressed.

4. When measuring long-distance vertical phoria, a vertical Maddox rod is placed in front of the subject's right eye, and the rest is the same as described in 3. During the examination, cover the subject's left eye and confirm that the subject sees a horizontal line. The examiner covers the right eye of the subject, guides the subject to look at the indicator light 500 in the center of the measurement card, and keeps the surrounding letters ABCD clear. When the examiner removes the cover, he reports which scale the horizontal line passes through. If the subject reports that the horizontal line is above the 0 scale, it is said to be right lower phoria; if it is below the 0 scale, it is said to be right upper phoria. The scale value that the horizontal line passes through is the long-distance vertical obliqueness. If only the indicator light 500 is seen, the subject's phoria may be beyond the range of this measurement card, or the right eye may be suppressed; if only the horizontal line is seen, the subject's left eye may be suppressed.

The above detailed description is a specific description of possible embodiments of the present utility model. The embodiments are not intended to limit the patent scope of the present utility model. Any equivalent implementation or modification that does not depart from the scope of the present utility model shall be included in this case. within the scope of the patent.

Claims (10)

1. A long-short distance concealed inclination measuring card, which is characterized in that: the three-fold card comprises a hard card, wherein the hard card is formed by sequentially connecting a left card, a middle card and a right card, and can be unfolded or folded freely; a through hole is formed in the center of the middle card, a first cross scale mark line for short-distance gradient measurement is arranged on one surface of the middle card, the first cross scale mark line comprises a first horizontal scale and a first vertical scale which are vertically crossed, the cross center point is aligned to the through hole, the first horizontal scale is gradually increased to the horizontal direction by taking the through hole as a starting point, and the first vertical scale is gradually increased to the vertical direction by taking the through hole as a starting point; the other surface of the middle card is provided with a second horizontal scale mark line for remote concealing gradient measurement, the second horizontal scale mark line comprises a second horizontal scale and a second vertical scale which are vertically crossed, the cross center point is aligned with the through hole, the second horizontal scale is gradually increased to the horizontal direction by taking the through hole as a starting point, and the second vertical scale is gradually increased to the vertical direction by taking the through hole as a starting point; the second horizontal scale continuously penetrates through the three cards of the left card, the middle card and the right card; an indicator lamp is detachably arranged in the through hole, and the luminous surface of the indicator lamp faces to the person to be inspected.

2. The near-far cryptopitch measurement card of claim 1, wherein: in the first cross scale marks, the equidistant intervals of the marks of the first horizontal scale are 8mm, and the equidistant intervals of the marks of the first vertical scale are 8mm; in the twenty-first scale marks, the marks of the second horizontal scale are spaced at equal intervals of 3cm, and the marks of the second vertical scale are spaced at equal intervals of 3cm.

3. The near-far cryptopitch measurement card of claim 1, wherein: in the first cross scale mark line, the right side mark line of the first horizontal scale is dark red, the scale and the number are arranged above the mark line, and a first mark for marking the hidden oblique direction is arranged at the right end below the scale mark line; the left marking line of the first horizontal scale is dark blue, the scale and the number are arranged below the marking line, and a second mark for marking the hidden oblique direction is arranged at the left end above the marking line of the scale; the upper marking of the first vertical scale is black, the scale and the number are arranged on the left side of the marking, and a third mark for marking the hidden oblique direction is arranged at the upper end of the right side of the marking; the lower side marking of first vertical scale is black, and its scale and digit setting are on the marking right, and its scale marking left side below end is equipped with the fourth sign that is used for marking the hidden oblique direction.

4. The near-far cryptopitch measurement card of claim 1, wherein: in the twenty-first scale mark, the right side mark of the second horizontal scale is dark red, the scale and the number are arranged above the mark, and a fifth mark for marking the hidden oblique direction is arranged at the right end below the scale mark; the left marking line of the second horizontal scale is dark blue, the scale and the number are arranged below the marking line, and a sixth mark for marking the hidden oblique direction is arranged at the left end above the marking line of the scale; the upper marking of the second vertical scale is black, the scale and the number are arranged on the left side of the marking, and a seventh mark for marking the hidden oblique direction is arranged at the upper end of the right side of the marking; the lower side marking of the second vertical scale is black, the scale and the number are arranged on the right side of the marking, and an eighth mark for marking the hidden oblique direction is arranged at the lower end of the left side of the marking.

5. The near-far cryptopitch measurement card of claim 1, wherein: the first cross scale mark line divides one surface of the middle card into four quadrants, and letter marks are respectively arranged in the positions, close to the through holes, of each quadrant; the twenty-first scale mark line divides one surface of the middle card into four quadrants, and letter marks are respectively arranged in the positions, close to the through holes, of each quadrant.

6. The near-far cryptopitch measurement card of claim 1, wherein: round holes are respectively formed in two ends of the upper portion of the middle card, and hanging ropes used for hanging the measuring card on a wall are arranged in the round holes in a penetrating mode.

7. The near-far cryptopitch measurement card of claim 1, wherein: the middle card is of a rectangular structure, the structures of the left card and the right card are symmetrical and are right trapezoid structures, the lower bottom of the trapezoid structures is connected with the side edges of the middle card into a whole, and the oblique edges of the two right trapezoid structures are positioned on the lower side of the card; the specification of the middle card is 210mm x 290mm; the lower bottom of the trapezoid structure is 210mm, the upper bottom is 113mm, and the right-angle waist is 280mm.

8. The near-far cryptopitch measurement card of claim 1, wherein: the hard card is made of PVC material with the thickness of 1.0mm, and the diameter of the through hole is 2mm.

9. The near-far cryptopitch measurement card of claim 1, wherein: a wire, a power supply and a switch are connected with the indicator lamp; the power supply and the switch are connected with the indicator lamp through a wire.

10. The near-far cryptopitch measurement card of claim 1, wherein: the middle card is also provided with a first measurement distance reminding mark and a second measurement distance reminding mark; the first measuring distance reminding mark is positioned at the left lower corner position of one surface of the middle card where the first cross scale mark is positioned, and the second measuring distance reminding mark is positioned at the left lower corner position of one surface of the middle card where the second cross scale mark is positioned.