CN111938568A - A peripheral refraction detection auxiliary device for refractometer - Google Patents

Abstract

The invention discloses a peripheral refraction detection auxiliary device for an optometry instrument, which is characterized by comprising an installation frame and an arc-shaped measurer, wherein the installation frame can be in matched connection with the optometry instrument, the arc-shaped measurer is arranged on the installation frame, the installation frame comprises a cross rod for sliding connection of the arc-shaped measurer, the length direction of the cross rod extends along the horizontal direction, the sliding direction of the arc-shaped measurer on the cross rod is the length direction of the cross rod, travel scales for measuring the sliding distance of the arc-shaped measurer are arranged on the installation frame, and the arc-shaped measurer can respectively slide to two sides according to the interpupillary distance of a person to be tested in a matched mode. The device can adjust to the difference of individual interpupillary distance, can effectively improve and measure the precision.

Description

A peripheral refraction detection auxiliary device for refractometer

technical field

The invention relates to the technical field of medical devices, and more particularly, to an auxiliary device for detecting peripheral refraction for a refractometer.

Background technique

The concept of peripheral refraction was first proposed by Ferree et al. in 1931. Peripheral refractive power refers to the refractive power in the peripheral visual field at a certain angle with the visual axis, that is, the focusing state after the light at a certain angle with the visual axis enters the eyeball. According to the focus of incident light and the relative position of the retina, it can also be divided into relative myopia, relative hyperopia and other states. The central and peripheral refractive power are the most important indicators to completely evaluate the refractive state of the human eye. The further to the periphery, the greater the difference between the peripheral refractive power and the central refractive power, and higher-order aberrations such as astigmatism, spherical aberration, and coma will appear.

Peripheral refractive power is of great significance in ophthalmology clinical and scientific research, and has now become a common test item in myopia research and pediatric ophthalmology. (1) Peripheral refractive power is an important factor affecting the progression of myopia. Studies have confirmed that the peripheral refractive state of myopic eyes is different from that of emmetropic eyes, and it is manifested as peripheral relative hyperopia. This peripheral defocused stimulus will cause the axial growth of the eye, which will lead to the progression of myopia; although the use of glasses to correct the light in the direction of the visual axis Focus on the macula, but because the periphery is still relatively farsighted, it can still cause myopia to deepen. (2) Peripheral refraction is an important factor regulating the emmetropia process of human eyes. Animal experiments have shown that the size and nature of peripheral refractive power play an important role in regulating the development of the eyeball.

At present, the Chinese patent with the publication number of CN206372029U discloses a simple peripheral diopter measurement device, which includes an arc-shaped measuring ruler, a suspension arm is connected to the middle of the arc-shaped measuring ruler, and a suspension hole is provided on the suspension arm. 1. The outer side of the arc-shaped measuring ruler is marked with a number of scales at even intervals, and the scales are from -90° to 90°, and the bottom edge of the arc-shaped measuring ruler is provided with hanging holes corresponding to the scales. Second, A plurality of hanging pieces are connected to the second hanging hole, and the hanging pieces are in one-to-one correspondence with the scales. Although this simple peripheral diopter measurement device is easy to carry and can perform preliminary measurement of the peripheral diopter in the horizontal direction, it cannot be adjusted for differences in individual interpupillary distances, which makes the measurement accuracy unclear and greatly reduces the detection effect.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the present invention is to provide an auxiliary device for detecting peripheral refraction for a refractometer, which can be adjusted for differences in individual interpupillary distances and can effectively improve measurement accuracy.

In order to achieve the above purpose, the present invention provides the following technical solutions: a peripheral refraction detection auxiliary device for a refractometer, comprising a mounting frame that can be cooperatively connected with the refractor and an arc-shaped measuring device arranged on the mounting frame, so The mounting frame includes a cross bar for sliding connection of the arc-shaped measuring device, the length direction of the horizontal bar is extended along the horizontal direction, and the sliding direction of the arc-shaped measuring device on the horizontal bar is the horizontal direction of the horizontal bar. In the length direction, the mounting frame is provided with a stroke scale for measuring the sliding distance of the arc-shaped measuring device, and the arc-shaped measuring device can be respectively slipped to both sides on the horizontal bar according to the interpupillary distance of the examinee. Fit distance.

The present invention is further provided as follows: the circular arc measuring device comprises a sliding seat which is axially slidably connected to the cross bar and a circular arc measuring ruler arranged on the sliding seat, and the circular arc measuring ruler comprises There are horizontal scales arranged along the horizontal direction and longitudinal scales arranged along the longitudinal direction, and the intersection of the horizontal scale and the vertical scale is located in the middle of the arc-shaped measuring ruler.

The present invention is further provided as follows: the arc-shaped measuring ruler includes a detection surface with a concave spherical surface structure, the lateral scale and the longitudinal scale are both arranged on the detection surface, and the detection surface is also provided with a horizontal scale and a detection surface. The vertical scale forms the angular scale within each quadrant.

The present invention is further provided that: the horizontal scale, the vertical scale and the angle scale all include lamp beads for identifying scale values.

The present invention is further provided as follows: the arc-shaped measuring ruler is arranged in a sheet-like structure, and the arc-shaped measuring ruler is provided with a mounting through hole for positioning and installing the lamp bead, and the mounting through hole penetrates the arc-shaped measuring ruler Thickness direction setting.

The present invention is further provided that: the mounting frame further includes an auxiliary rod for restricting the rotation of the arc-shaped measuring device, the auxiliary rod is arranged in parallel with the cross rod, the cross-section of the cross rod is arranged in a circular structure, and the circular arc When the arc-shaped measuring device is in contact with the auxiliary rod, it can limit the downward rotation of the arc-shaped measuring device under the action of gravity on the horizontal bar.

The present invention further provides that: the stroke scale is arranged on the side of the auxiliary rod away from the abutment with the arc-shaped measuring device, and the middle part of the arc-shaped measuring device is provided with an indicating arrow pointing to the stroke scale.

The present invention is further provided that: the auxiliary rod is slidably connected with a sliding seat for setting the stroke scale, the sliding direction of the sliding seat on the auxiliary rod is set along the length direction of the auxiliary rod, and the sliding seat is provided with A locking structure that can be locked on the auxiliary lever.

The present invention is further provided as follows: the mounting frame further includes a column assembly for supporting the cross bar, the column assembly is provided with two, and is located at both ends of the cross bar in the length direction, the column assembly includes The base on the instrument table, the upright pole arranged on the base, and the upright pole are slidably connected on the upright pole for connecting with the cross bar on the sliding seat, and the sliding seat is provided with a lock which can be locked on the upright pole Structure, the sliding direction of the sliding seat on the vertical rod is the length direction of the vertical rod, and the height of the arc-shaped measuring device can be regulated in the process of sliding the horizontal rod on the vertical rod through the sliding seat.

The present invention further provides that: the base is provided with a locking structure capable of locking the base on the table top of the optometry instrument.

To sum up, the present invention has the following beneficial effects: the arc-shaped measuring device is slidably connected to the cross bar, and the mounting frame is provided with a travel scale, so it can be adjusted according to the difference in the interpupillary distance of different subjects, that is, according to The single eye interpupillary distance of the examinee moves the arc-shaped measuring device to the suitable scale according to the stroke scale, so that the detection center of the arc-shaped measuring device can be aligned with the eye of the examinee, thereby effectively improving the measurement periphery. Diopter accuracy.

Description of drawings

1 is a schematic structural diagram of a peripheral refractive detection auxiliary device for a refractometer;

Fig. 2 is the three-dimensional structure schematic diagram of arc-shaped measuring ruler;

Figure 3 is a front view of a circular arc measuring ruler.

Reference numerals: 1, mounting bracket; 11, cross bar; 12, auxiliary bar; 121, sliding seat; 122, stroke scale; 13, column assembly; 131, base; 132, column; 133, sliding seat; 2, Arc-shaped measuring device; 21, sliding seat; 22, arc-shaped measuring ruler; 221, detection surface; 222, horizontal scale; 223, vertical scale; 224, angle scale; 225, installation through hole; 23, indicating arrow .

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. Wherein the same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top" "Face", "inner" and "outer" refer to directions toward or away from the geometric center of a particular part, respectively.

Referring to Figures 1-3, a peripheral refractive detection auxiliary device for a refractometer includes a mounting frame 1 that can be connected with the refractometer and an arc-shaped measuring device 2 arranged on the mounting frame 1. It can be a WAM-5500 infrared refractometer with an open window, and the arc measuring device 2 and the person to be tested are located on both sides of the refractometer; the mounting frame 1 includes a cross bar for the arc measuring device 2 to slide and connect 11. The length direction of the cross bar 11 is extended along the horizontal direction. The sliding direction of the circular arc measuring device 2 on the horizontal bar 11 is the length direction of the horizontal bar 11. The installation frame 1 is provided with an arc measuring device for measuring. 2. The stroke scale 122 of the sliding distance, the arc measuring device 2 can be respectively slid to the two sides according to the interpupillary distance of the examinee to fit the stroke scale 122 on the horizontal bar 11.

The arc-shaped measuring device 2 is slidably connected to the cross bar 11, and the installation frame 1 is provided with a travel scale 122, so it can be adjusted according to the difference in the interpupillary distance of different subjects, that is, according to the monocular interpupillary distance of the subject. The arc-shaped measuring device 2 is moved to a suitable scale according to the stroke scale 122 , so that the detection center of the arc-shaped measuring device 2 can be aligned with the eye to be examined, thereby effectively improving the accuracy of measuring peripheral diopter.

The arc-shaped measuring device 2 includes a sliding seat 21 which is axially slidably connected to the cross bar 11 and an arc-shaped measuring ruler 22 arranged on the sliding seat 21. The arc-shaped measuring ruler 22 includes a The horizontal scale 222 that is arranged and the vertical scale 223 arranged along the longitudinal direction, the intersection of the horizontal scale 222 and the vertical scale 223 is located in the middle of the arc-shaped measuring ruler 22, that is, the detection center of the arc-shaped measuring device 2, so that the horizontal The intersection of the scale 222 and the longitudinal scale 223 can be aligned with the eye to be tested, so that the peripheral diopter detection in the horizontal and vertical directions can be realized, the detection range and detection effect can be effectively improved, and it is beneficial to further explore the peripheral diopter and the development of myopia The relationship between.

The arc-shaped measuring ruler 22 includes a detection surface 221 with a concave spherical surface structure, the lateral scale 222 and the longitudinal scale 223 are both arranged on the detection surface 221, and the detection surface 221 is also provided with a horizontal scale 222 and a longitudinal scale 223. An angular scale 224 within each quadrant is formed. The center of the detection surface 221 preferably coincides with the eye to be examined of the examinee, which is beneficial to improve the accuracy of measuring the peripheral diopter; and the additional angle scale 224 can also measure the peripheral diopter of different angles of the examinee, which can greatly improve the detection range and The detection effect is conducive to further exploring the relationship between peripheral diopter and myopia development.

The horizontal scale 222, the vertical scale 223 and the angle scale 224 all include lamp beads for identifying the scale values. When the lamp bead is on, it can effectively and conveniently guide the eye of the examinee to move to this place, the structure is simple and easy to implement, and the doctor can control the state of the lamp bead through the console to guide the examinee.

The arc-shaped measuring ruler 22 is arranged in a sheet-like structure. The arc-shaped measuring ruler 22 is provided with a mounting through hole 225 for positioning and installing the lamp bead. The arc-shaped measuring ruler 22 is a one-piece structure, which is convenient for laying the horizontal scale 222, the vertical scale 223 and the angle scale 224, and the setting of the installation through hole 225 can facilitate the positioning and installation of the lamp bead, even if a lamp bead is damaged. The quick replacement through the installation through holes 225 greatly improves the installation convenience of the lamp beads. The installation of the through holes 225 can also allow the lamp beads to be inserted from the rear of the arc-shaped measuring ruler 22 and exposed from the detection surface 221 , and even the power cord connecting the lamp beads can be carried out at the rear of the arc-shaped measuring ruler 22 . Carding to avoid hindering the detection.

The mounting frame 1 also includes an auxiliary rod 12 for restricting the rotation of the arc-shaped measuring instrument 2. The auxiliary rod 12 is arranged in parallel with the horizontal rod 11, and the cross-section of the horizontal rod 11 is arranged in a circular structure. When the rod 12 is in contact, it can limit the downward rotation of the circular arc measuring device 2 on the horizontal rod 11 under the action of gravity. The arrangement of the auxiliary rod 12 can keep the arc-shaped measuring device 2 in a vertical state, that is, the detection surface 221 faces the examinee, and the structure is simple and easy to implement.

The stroke scale 122 is provided on the side of the auxiliary rod 12 away from the abutment with the arc-shaped measuring device 2 , and the middle of the arc-shaped measuring device 2 is provided with an indicating arrow 23 pointing to the stroke scale 122 . That is, the stroke scale 122 and the indicating arrow 23 are both set towards the doctor, which is convenient for the doctor to slide the matching distance on the horizontal bar 11 with the stroke scale 122 on both sides respectively according to the interpupillary distance of the examinee.

The auxiliary rod 12 is slidably connected with a sliding seat 121 for setting the stroke scale 122 . The sliding direction of the sliding seat 121 on the auxiliary rod 12 is arranged along the length direction of the auxiliary rod 12 . Locking structure on rod 12. Since the installation position of the mounting frame 1 on the refractor is not necessarily fixed, in order to facilitate the installation of the installation frame 1 and reduce the accuracy requirements of the installation position of the installation frame 1 and the refractor, the travel scale 122 is set at the same position as the auxiliary rod 12 . On the sliding seat 121 which is slidably connected, the stroke scale 122 can be flexibly adjusted, which greatly improves the use flexibility and application range of the auxiliary device. The locking structure can be locked on the auxiliary rod 12 after the sliding seat 121 slides in place.

The mounting frame 1 also includes a column assembly 13 for supporting the cross bar 11. There are two column assemblies 13, and they are located at both ends of the cross bar 11 in the longitudinal direction. The column assembly 13 includes a base 131 for setting on the optometry table. , and the vertical rod 132 arranged on the base 131, and the sliding connection on the vertical rod 132 for connecting with the cross bar 11 on the sliding seat 133, and the sliding seat 133 is provided with a lock that can be locked on the vertical rod 132 Structure, the sliding direction of the sliding seat 133 on the vertical rod 132 is the length direction of the vertical rod 132, and the cross bar 11 can adjust the position of the arc-shaped measuring device 2 in the process of sliding on the vertical rod 132 through the sliding seat 133 high. The setting of the column assembly 13 can realize the support of the cross bar 11 and facilitate the adjustment of the height of the cross bar 11, so that it can be applied to a refractometer of any height, and can effectively improve the flexibility and application scope of the auxiliary device, and even can When the desktop is not flat, the horizontal state of the horizontal bar 11 can be regulated by adjusting the height of the two ends of the horizontal bar 11, so as to further improve the flexibility of use and the scope of application of the auxiliary device; and the horizontal adjustment of the horizontal bar 11 can be used with a spirit level. . The locking structure can be locked on the vertical rod 132 after the sliding seat 133 is slid in place, and can be realized by using a screw screwed on the sliding seat 133 .

The base 131 is provided with a locking structure capable of locking the base 131 on the table top of the optometrist. The locking structure is a well-known technology. It adopts a common design, and a suction cup in the prior art can be used to realize the adsorption of the base 131 on the table top of the optometry instrument, and a clamping claw can also be used to realize the clamping of the base 131 on the table top of the optometry instrument. The fixing structure can realize the locking of the base 131 on the table top of the optometry instrument, thereby improving the stability of the auxiliary device in use.

The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions that belong to the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (10)

1. A peripheral refractive detection auxiliary device for a refractometer, comprising a mounting frame (1) that can be cooperatively connected with the refractometer and a circular arc measuring device (2) arranged on the mounting frame (1), it is characterized in that : The mounting frame (1) includes a cross bar (11) for sliding connection of the arc measuring device (2), the length direction of the cross bar (11) is extended along the horizontal direction, and the arc shape The sliding direction of the measuring device (2) on the cross bar (11) is the length direction of the horizontal bar (11), and the mounting frame (1) is provided with a sliding distance of the arc-shaped measuring device (2) for measuring the sliding distance. The stroke scale (122), the arc-shaped measuring device (2) can be respectively slid on the horizontal bar (11) with the stroke scale (122) to the two sides according to the interpupillary distance of the examinee by a suitable distance. 2. The peripheral refractive detection auxiliary device for a refractometer according to claim 1, characterized in that: the arc-shaped measuring device (2) comprises an axial sliding connected to the cross bar (11) A sliding seat (21) and a circular arc-shaped measuring ruler (22) arranged on the sliding seat (21), the circular arc-shaped measuring ruler (22) comprising transverse scales (222) arranged along the transverse direction, and Longitudinal scales (223) are arranged along the longitudinal direction, and the intersection of the transverse scales (222) and the longitudinal scales (223) is located in the middle of the arc-shaped measuring ruler (22). 3. The peripheral refractive detection auxiliary device for a refractometer according to claim 2, wherein the circular arc-shaped measuring ruler (22) comprises a detection surface (221) with a concave spherical surface structure, The horizontal scale (222) and the vertical scale (223) are both arranged on the detection surface (221), and the detection surface (221) is further provided with a horizontal scale (222) and a vertical scale (223) within each quadrant formed by the horizontal scale (222) and the vertical scale (223). Angle scale (224). 4. The peripheral refractive detection auxiliary device for a refractometer according to claim 3, wherein the horizontal scale (222), the vertical scale (223) and the angle scale (224) all include a scale for marking Numerical lamp beads. 5. The peripheral refractive detection auxiliary device for a refractometer according to claim 4, characterized in that: the arc-shaped measuring ruler (22) is arranged in a sheet-like structure, and the arc-shaped measuring ruler (22) is arranged in a sheet-like structure. ) is provided with an installation through hole (225) for positioning and installation of the lamp bead, and the installation through hole (225) is arranged through the thickness direction of the arc-shaped measuring ruler (22). 6. The peripheral refraction detection auxiliary device for a refractometer according to claim 1, wherein the mounting frame (1) further comprises an auxiliary rod ( 12), the auxiliary rod (12) is arranged in parallel with the cross rod (11), the cross section of the cross rod (11) is arranged in a circular structure, and the circular arc measuring device (2) is in contact with the auxiliary rod (12). When connected, the circular arc measuring device (2) can be restrained from rotating downward on the cross bar (11) under the action of gravity. 7 . The peripheral refractive detection auxiliary device for a refractometer according to claim 6 , wherein the travel scale ( 122 ) is arranged on the auxiliary rod ( 12 ) away from the arc measuring device ( 2 ). 8 . On one side, an indication arrow (23) pointing to the stroke scale (122) is provided in the middle of the arc-shaped measuring device (2). 8 . The peripheral refractive detection auxiliary device for a refractometer according to claim 7 , wherein the auxiliary rod ( 12 ) is slidably connected with a sliding seat ( 121 ) for setting the stroke scale ( 122 ). 9 . , the sliding direction of the sliding seat (121) on the auxiliary rod (12) is arranged along the length direction of the auxiliary rod (12), and the sliding seat (121) is provided with a device that can be locked on the auxiliary rod (12) locking structure. 9 . The peripheral refractive detection auxiliary device for a refractometer according to claim 1 , wherein the mounting frame ( 1 ) further comprises a column assembly ( 13 ) for supporting the cross bar ( 11 ). Two of the column assemblies (13) are provided, and they are respectively located at both ends of the crossbar (11) in the length direction. The vertical rod (132) on the (131) and the sliding connection on the vertical rod (132) are used for connecting with the cross rod (11) on the sliding seat (133), and the sliding seat (133) is provided with a lockable The locking structure fixed on the vertical rod (132), the sliding direction of the sliding seat (133) on the vertical rod (132) is the length direction of the vertical rod (132), and the cross rod (11) passes through the sliding seat (132). 133) During the process of sliding on the vertical rod (132), the height of the arc measuring device (2) can be adjusted. 10. The peripheral refraction detection auxiliary device for a refractometer according to claim 9, wherein the base (131) is provided with a lock capable of locking the base (131) on the refractor table top structure.

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