A hand-held pupillometer

Abstract

The utility model relates to a kind of hand-held pupil measuring instrument, belong to medical instrument technical field, solve the technical problem that the angle adjustment of inconvenient after the positioning of existing measuring instrument;Including measuring instrument body, measuring device and support bracket;Support bracket includes fixed ring, connecting column, connecting rod, support and suction cup, fixed ring is set on measuring instrument body, and it can rotate on measuring instrument body, connecting column is set on fixed ring, one end of connecting rod is connected to connecting column, support and the other end of connecting rod are hinged.Suction cup is used to be adsorbed at the eye socket of patient, realize the stable fixation of measuring instrument body at the eye socket of patient, avoid the loosening and displacement in the measurement process, one end of connecting rod is connected to connecting column, the other end is hinged with support, the other end of connecting rod can swing in different directions relative to support, to drive the swing of measuring instrument body, realize angle adjustment after the positioning of measuring instrument body.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a handheld pupil measuring instrument. Background Technology

[0002] Pupil measurement is an important indicator for clinical neurological function assessment, anesthesia depth monitoring, and diagnosis of traumatic brain injury. Its accuracy directly affects the reliability of medical decisions. Traditional pupil measurement techniques mainly rely on manual measurement by doctors. When doctors manually operate a pen-type pupillometer for visual assessment, they hold the device close to the patient's eye and judge the pupil diameter and light reflex parameters based on experience. However, manual operation has poor stability. Even slight hand tremors can cause the illumination spot to shift, resulting in a large error in pupil diameter readings. This is especially true in dynamic pupillary response monitoring, where it is difficult to maintain a continuous and stable observation axis.

[0003] To address the issue of poor stability during manual operation, some research institutions have developed a pupil measuring instrument that is handheld and uses a nose pad. The nose pad is fixed to the measuring instrument, and by placing the nose pad on the patient's nose, one end of the pupil measuring instrument is fixed. Although this method can improve the stability of the measurement to some extent, it is not convenient to adjust the angle of the measuring instrument after positioning, which limits the flexibility and adaptability of the measurement. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide a handheld pupil measuring instrument to solve the technical problem that existing measuring instruments are inconvenient to adjust the angle after positioning.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] A handheld pupil measuring device includes a measuring device body, a measuring device, and a support bracket. The measuring device is disposed on the measuring device body to measure the pupil, and the support bracket is disposed on the measuring device body and the patient's eye socket to position the measuring device body.

[0007] The support bracket includes a fixing ring, a connecting column, a connecting rod, a support bracket, and a suction cup. The fixing ring is sleeved on the measuring instrument body, and the measuring instrument body can rotate within the fixing ring. The connecting column is disposed on the fixing ring. One end of the connecting rod is connected to the connecting column, and the other end of the connecting rod is hinged to the support bracket. The suction cup is fixedly disposed in the middle of the support bracket to adhere to the patient's eye socket.

[0008] Furthermore, the support bracket also includes a pad, which is fixedly disposed at the edge of the support bracket to cushion the pressure on the patient's eye socket.

[0009] Furthermore, the support bracket also includes a rotation positioning assembly, which includes a positioning post and an elastic clamping groove. The positioning post is fixedly disposed on the measuring instrument body, and the elastic clamping groove is fixedly disposed on the inner ring of the fixing ring. The positioning post can be pressed into the elastic clamping groove to fix the fixing ring on the measuring instrument body.

[0010] Furthermore, the handheld pupil measuring instrument also includes a hand grip, which is fixedly mounted on the measuring instrument body for hand gripping.

[0011] Furthermore, the handheld pupil measuring instrument also includes a sliding assembly, which includes a slider and a slide rail. One end of the slider is fixedly mounted on the fixed ring, and the other end of the slider is embedded in the slide rail and can move within the slide rail to adjust the distance between the measuring instrument body and the pupil. The slide rail is fixedly mounted on the measuring instrument body.

[0012] Furthermore, the handheld pupil measuring instrument also includes a moving component, which includes a first magnetic surface layer, a second magnetic surface layer, and a magnetic adsorption block. The first magnetic surface layer is fixedly disposed on the measuring instrument body, the second magnetic surface layer is fixedly disposed on the measuring device, one side of the magnetic adsorption block is fixedly disposed on the second magnetic surface layer, and the other side of the magnetic adsorption block is adsorbed on the first magnetic surface layer, and can move on the first magnetic surface layer to adjust the position of the measuring device.

[0013] Furthermore, the magnetic adsorption block includes a magnetic adsorption block body and a first sliding layer, the first sliding layer being fixedly disposed on the magnetic adsorption block body, and the first sliding layer abutting against the first magnetic adsorption surface layer.

[0014] Furthermore, the measuring instrument body includes a power switch, a battery, and a handheld tube. The power switch is fixedly mounted on the handheld tube, the battery is installed inside the handheld tube, and the battery is electrically connected to the measuring device. The power switch is used to control the on / off state of the electrical connection.

[0015] Furthermore, the measuring device includes a light source lamp, a light source cover, and a lens. The lens is fixedly mounted on the light source cover, and the light source lamp is fixedly mounted on the light source cover so as to illuminate the patient's pupil through the lens.

[0016] Furthermore, the lens is provided with a horizontal projection scale and a vertical projection scale.

[0017] The technical solution of this utility model can achieve at least one of the following effects:

[0018] (1) The handheld pupil measuring instrument of this utility model includes a measuring instrument body, a measuring device and a support bracket; the support bracket includes a fixing ring, a connecting column, a connecting rod, a support bracket and a suction cup. The fixing ring is set on the measuring instrument body and can rotate on the measuring instrument body. The connecting column is set on the fixing ring. One end of the connecting rod is connected to the connecting column. The support bracket is hinged to the other end of the connecting rod. The suction cup is fixedly set in the middle of the support bracket to adhere to the patient's eye socket, so as to realize the stable fixation of the measuring instrument body in the patient's eye socket and avoid loosening and displacement during the measurement process. One end of the connecting rod is connected to the connecting column and the other end is hinged to the support bracket. Thus, the other end of the connecting rod can swing in different directions relative to the support bracket, thereby driving the swing of the measuring instrument body and realizing the angle adjustment after the measuring instrument body is positioned.

[0019] (2) The handheld pupil measuring instrument of this utility model has a pad fixedly set on the edge of the support bracket. The pad can buffer the pressure of the support bracket on the patient's eye socket, reduce the discomfort caused by hard contact, and prevent the support bracket from pressing on the patient's eye socket by dispersing the pressure, thus avoiding pain or discomfort caused by long-term measurement.

[0020] (3) The handheld pupil measuring instrument of this utility model has a sliding component including a slider and a slide rail. One end of the slider is fixedly mounted on a fixed ring, and the slide rail is fixedly mounted on the measuring instrument body. The other end of the slider is embedded in the slide rail and can move within the slide rail to adjust the distance between the measuring instrument body and the pupil. By adjusting the distance between the measuring instrument body and the pupil, it can be ensured that the light source and lens of the measuring instrument are accurately aligned with the patient's pupil, reducing measurement errors and improving measurement accuracy. In addition, distance adjustment can avoid light scattering or inaccurate focusing caused by the distance being too close or too far.

[0021] (4) The handheld pupil measuring instrument of this utility model has a rotating positioning component including a positioning post and an elastic clamping groove. The positioning post is fixedly set on the measuring instrument body, and the elastic clamping groove is fixedly set on the inner ring of the fixing ring. The positioning post can be pressed into the elastic clamping groove to fix the fixing ring on the measuring instrument body. The elastic deformation of the elastic clamping groove generates a clamping force to fix the positioning post in the elastic clamping groove, thereby fixing the fixing ring and the measuring instrument body relatively. The cooperation between the positioning post and the elastic clamping groove ensures the stable fixation of the fixing ring on the measuring instrument body, prevents the unexpected rotation of the measuring instrument body during the measurement process, and ensures the stability and reliability of the measurement.

[0022] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0023] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0024] Figure 1 This is a schematic diagram of the handheld pupil measuring instrument in Embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the support bracket in Embodiment 1 of this utility model;

[0026] Figure 3 This is a cross-sectional schematic diagram of the rotation positioning component in Embodiment 1 of this utility model;

[0027] Figure 4 This is a schematic diagram of the sliding component in Embodiment 2 of this utility model;

[0028] Figure 5 This is a cross-sectional schematic diagram of the moving component in Embodiment 3 of this utility model;

[0029] Figure 6 This is a schematic diagram of measuring the pupil diameter using a handheld pupil measuring instrument in Embodiment 1 of this utility model.

[0030] Figure label:

[0031] 1- Measuring instrument body, 11- Power switch, 12- Battery, 13- Handheld tube;

[0032] 2-Measuring device, 21-Light source lamp, 22-Light source cover, 23-Lens;

[0033] 3-Support bracket, 31-Fixing ring, 32-Connecting column, 33-Connecting rod, 34-Support bracket, 35-Washer, 36-Suction cup, 37-Rotation positioning assembly, 371-Positioning column, 372-Elastic clamping groove;

[0034] 4-Hand grip;

[0035] 5-Sliding component, 51-Slider, 52-Slide rail;

[0036] 6-Moving component, 61-First magnetic surface layer, 62-Second magnetic surface layer, 63-Magnetic adsorption block, 631-Magnetic adsorption block body, 632-First sliding layer. Detailed Implementation

[0037] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0038] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0039] Example 1

[0040] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a handheld pupil measuring instrument, including a measuring instrument body 1, a measuring device 2, and a support bracket 3. The measuring device 2 is mounted on the measuring instrument body 1 to measure the pupil. The support bracket 3 is mounted on the measuring instrument body 1 and the patient's eye socket to position the measuring instrument body 1. The support bracket 3 includes a fixing ring 31, a connecting post 32, a connecting rod 33, a support bracket 34, and a suction cup 36. The fixing ring 31 is sleeved on the measuring instrument body 1, and the measuring instrument body 1 can rotate within the fixing ring 31. The connecting post 32 is mounted on the fixing ring 31. One end of the connecting rod 33 is connected to the connecting post 32, and the other end of the connecting rod 33 is hinged to the support bracket 34. The suction cup 36 is fixedly mounted in the middle of the support bracket 34 to adhere to the patient's eye socket.

[0041] The measuring instrument body 1 serves as the basic structure of the handheld pupil measuring instrument, supporting and connecting other components; the measuring device 2 is used to directly measure the patient's pupil and obtain relevant pupil data; the support bracket 3 is used to position the measuring instrument body 1 at the patient's eye socket to ensure the stability and accuracy of the measurement process.

[0042] Specifically, the support bracket 3 includes a fixing ring 31, a connecting post 32, a connecting rod 33, a support bracket 34, and a suction cup 36. The fixing ring 31 is rotatably mounted on the measuring instrument body 1 to allow for angle adjustment of the measuring instrument body 1. The connecting post 32 connects the fixing ring 31 and the connecting rod 33 into a single unit. The support bracket 34 directly contacts the eye socket and supports the suction cup 36. The suction cup 36 is used to adhere to the patient's eye socket, achieving stable fixation of the measuring instrument body 1 at the patient's eye socket and preventing loosening and displacement during the measurement process. The support bracket 34 can be shell-shaped and made of engineering plastic. The suction cup 36 can be made of silicone rubber. One end of the connecting rod 33 is connected to the connecting post 32, and the other end is hinged to the support bracket 34. For example, the other end of the connecting rod 33 is connected to the support bracket 34 through a ball joint. Thus, the other end of the connecting rod 33 can swing in different directions relative to the support bracket 34, thereby driving the swing of the measuring instrument body 1. This enables the measuring instrument body 1 to be positioned and then adjusted at an angle, solving the technical problem that the existing measuring instruments are not convenient for angle adjustment after positioning.

[0043] In a preferred embodiment of this utility model, the support bracket 3 is provided with multiple brackets, for example, two brackets, one of which is positioned at the patient's upper eye socket and the other is positioned at the patient's lower eye socket. Through the dual positioning of the upper and lower support brackets 3, the measuring instrument body 1 can be more comprehensively fixed, reducing shaking and errors during the measurement process. In addition, the upper and lower support brackets 3 can also distribute the pressure of the measuring instrument body 1 on the patient's eye socket, reducing the problem of excessive force at a single point and improving the patient's comfort.

[0044] A preferred embodiment of this utility model is as follows: Figure 1 As shown, the connecting column 32 can rotate on the fixed ring 31. After the measurement is completed, by rotating the connecting column 32, the support bracket 3 can be stored under the measuring instrument body 1, which facilitates the storage and carrying of the device and improves the convenience and practicality of the device.

[0045] A preferred embodiment of this utility model is as follows: Figure 2 As shown, the support bracket 3 also includes a pad 35, which is fixedly disposed on the edge of the support bracket 34 to buffer the pressure on the patient's eye socket. The pad 35 can buffer the pressure of the support bracket 34 on the patient's eye socket, reduce the discomfort caused by hard contact, and by dispersing the pressure, the pad 35 can prevent the support bracket 34 from pressing on the patient's eye socket locally, avoiding pain or discomfort caused by long-term measurement. For example, the pad 35 can be made of silicone or rubber.

[0046] A preferred embodiment of this utility model is as follows: Figure 3As shown, the support bracket 3 also includes a rotation positioning assembly 37, which includes a positioning post 371 and an elastic clamping groove 372. The positioning post 371 is fixedly mounted on the measuring instrument body 1, and the elastic clamping groove 372 is fixedly mounted on the inner ring of the fixing ring 31. The positioning post 371 can be pressed into the elastic clamping groove 372 to fix the fixing ring 31 on the measuring instrument body 1. The positioning post 371 is fixedly mounted on the measuring instrument body 1 as a positioning reference point, and the elastic clamping groove 372 is fixedly mounted on the inner ring of the fixing ring 31 to fix the fixing ring 31 on the measuring instrument body 1. When subjected to force and deformation, the positioning pin 371 is pressed into the elastic clamping groove 372. In actual use, when the positioning pin 371 is pressed into the elastic clamping groove 372, the elastic deformation of the elastic clamping groove 372 generates clamping force, fixing the positioning pin 371 in the elastic clamping groove 372. This fixes the fixing ring 31 and the measuring instrument body 1 relatively. The cooperation between the positioning pin 371 and the elastic clamping groove 372 ensures the stable fixation of the fixing ring 31 on the measuring instrument body 1, preventing accidental rotation of the measuring instrument body 1 during the measurement process, and ensuring the stability and reliability of the measurement.

[0047] A preferred embodiment of this utility model is as follows: Figure 1 As shown, the handheld pupil measuring instrument also includes a hand grip 4, which is fixedly mounted on the measuring instrument body 1 for hand gripping. The hand grip 4 is fixedly mounted on the measuring instrument body 1, providing the operator with a dedicated gripping position, enabling the operator to hold the measuring instrument more stably and reducing measurement errors caused by hand instability.

[0048] A preferred embodiment of this utility model is as follows: Figure 1 As shown, the measuring instrument body 1 includes a power switch 11, a battery 12, and a handheld tube 13. The power switch 11 is fixedly mounted on the handheld tube 13, and the battery 12 is installed inside the handheld tube 13. The battery 12 is electrically connected to the measuring device 2. The power switch 11 is used to control the on / off state of the electrical connection. The power switch 11 is used to control the on / off state of the electrical connection between the battery 12 and the measuring device 2, thereby controlling the start and stop of the measuring device 2. The battery 12 provides power to the measuring device 2. For example, the battery 12 can be a rechargeable battery, which is convenient to charge at any time during use.

[0049] A preferred embodiment of this utility model is as follows: Figure 1 As shown, the measuring device 2 includes a light source 21, a light source cover 22, and a lens 23. The lens 23 is fixedly mounted on the light source cover 22, and the light source 21 is fixedly mounted on the light source cover 22 so that it shines through the lens 23 onto the patient's pupil. The light source 21 emits light, which shines through the lens 23 onto the patient's pupil to provide illumination for the measurement. The light source 21 can be an LED light with an illuminance of 180-250 lux.

[0050] Based on this, lens 23 is equipped with a horizontal projection scale and a vertical projection scale; the horizontal projection scale is used to measure the horizontal diameter of the pupil, and the horizontal dimension of the pupil can be read through the scale; the vertical projection scale is used to measure the vertical diameter of the pupil, and the vertical dimension of the pupil can be read through the scale. By using the two scales together, the size and shape of the pupil can be measured comprehensively, such as... Figure 6 As shown, let the distance from the light source 21 to the lens 23 be a, the projection size of the light source 21 through the lens 23 be c, the distance from the lens 23 to the pupil be b, and the width of the light source 21 projected onto the pupil be d. Let a = b, c be the midline of the isosceles triangle, and d be the third side. According to the midline theorem of a triangle, the midline of the triangle is parallel to the third side and equal to half of the third side, i.e., c = 1 / 2d. Thus, the vertical dimension of the pupil can be obtained. It should be noted that when using the measuring instrument described in this embodiment to measure the size and shape of the pupil, it is not limited to the case where a = b.

[0051] Example 2

[0052] In one embodiment of this utility model, as follows: Figure 4 As shown, based on Embodiment 1, the handheld pupil measuring instrument further includes a sliding component 5. The sliding component 5 includes a slider 51 and a slide rail 52. One end of the slider 51 is fixedly mounted on the fixing ring 31, and the slide rail 52 is fixedly mounted on the measuring instrument body 1. The other end of the slider 51 is embedded in the slide rail 52 and can move within the slide rail 52 to adjust the distance between the measuring instrument body 1 and the pupil. By adjusting the distance between the measuring instrument body 1 and the pupil, it can be ensured that the light source 21 and lens 23 of the measuring instrument are accurately aligned with the patient's pupil, reducing measurement errors and improving measurement accuracy. Distance adjustment can avoid light scattering or inaccurate focusing caused by distances that are too close or too far, thereby obtaining clearer measurement results.

[0053] Example 3

[0054] In one embodiment of this utility model, as follows: Figure 5As shown, based on Embodiment 1 or Embodiment 2, the handheld pupil measuring instrument further includes a moving component 6. The moving component 6 includes a first magnetic absorbing surface layer 61, a second magnetic absorbing surface layer 62, and a magnetic adsorption block 63. The first magnetic absorbing surface layer 61 is fixedly disposed on the measuring instrument body 1, the second magnetic absorbing surface layer 62 is fixedly disposed on the measuring device 2, one side of the magnetic adsorption block 63 is fixedly disposed on the second magnetic absorbing surface layer 62, and the other side of the magnetic adsorption block 63 is adsorbed on the first magnetic absorbing surface layer 61 and can move its position on the first magnetic absorbing surface layer 61 to adjust the position of the measuring device 2. Through the adjustment function of the moving component 6, the measuring device 2 can be aligned with the patient's pupil, reducing measurement errors and improving measurement accuracy. Specifically, when the measuring instrument is positioned, if the doctor finds that the position of the measuring instrument and the pupil is not aligned, the doctor can use the handheld measuring device 2 to move the magnetic adsorption block 63 on the first magnetic absorbing surface layer 61 to align the position of the measuring instrument and the pupil. It should be noted that the first magnetic absorbing surface layer 61 and the second magnetic absorbing surface layer 62 are both magnetically absorbing materials, such as ferritic stainless steel.

[0055] In a preferred embodiment of this utility model, the magnetic adsorption block 63 includes a magnetic adsorption block body 631 and a first sliding layer 632. The first sliding layer 632 is fixedly disposed on the magnetic adsorption block body 631 and abuts against the first magnetic adsorption surface layer 61. The magnetic adsorption block body 631 may be made of neodymium iron boron, and the first sliding layer 632 may be made of velvet material. By utilizing the low coefficient of friction and good wear resistance of velvet material, the friction between the magnetic adsorption block body 631 and the first magnetic adsorption surface layer 61 can be effectively reduced, making the magnetic adsorption block body 631 easier to move on the first magnetic adsorption surface layer 61 and reducing the resistance during the movement process.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A handheld pupil measuring instrument, characterized in that, The device includes a measuring instrument body (1), a measuring device (2), and a support bracket (3). The measuring device (2) is mounted on the measuring instrument body (1) to measure the pupil, and the support bracket (3) is mounted on the measuring instrument body (1) and the patient's eye socket to position the measuring instrument body (1). The support bracket (3) includes a fixing ring (31), a connecting column (32), a connecting rod (33), a support bracket (34), and a suction cup (36). The fixing ring (31) is sleeved on the measuring instrument body (1), and the measuring instrument body (1) can rotate within the fixing ring (31). The connecting column (32) is set on the fixing ring (31). One end of the connecting rod (33) is connected to the connecting column (32), and the other end of the connecting rod (33) is hinged to the support bracket (34). The suction cup (36) is fixedly set in the middle of the support bracket (34) to adhere to the patient's eye socket.

2. The handheld pupil measuring device according to claim 1, characterized in that, The support bracket (3) also includes a pad (35), which is fixedly disposed on the edge of the support bracket (34) to cushion the pressure on the patient's eye socket.

3. The handheld pupil measuring instrument according to claim 1, characterized in that, The support bracket (3) further includes a rotation positioning assembly (37), which includes a positioning post (371) and an elastic clamping groove (372). The positioning post (371) is fixedly mounted on the measuring instrument body (1), and the elastic clamping groove (372) is fixedly mounted on the inner ring of the fixing ring (31). The positioning post (371) can be pressed into the elastic clamping groove (372) to fix the fixing ring (31) on the measuring instrument body (1).

4. The handheld pupil measuring instrument according to claim 1, characterized in that, The handheld pupil measuring instrument also includes a hand grip (4), which is fixedly mounted on the measuring instrument body (1) for hand gripping.

5. The handheld pupil measuring instrument according to claim 1, characterized in that, The handheld pupil measuring instrument also includes a sliding component (5), which includes a slider (51) and a slide rail (52). One end of the slider (51) is fixedly mounted on the fixing ring (31), and the other end of the slider (51) is embedded in the slide rail (52) and can move within the slide rail (52) to adjust the distance between the measuring instrument body (1) and the pupil. The slide rail (52) is fixedly mounted on the measuring instrument body (1).

6. The handheld pupil measuring instrument according to claim 1, characterized in that, The handheld pupil measuring instrument also includes a moving component (6), which includes a first magnetic absorbing surface layer (61), a second magnetic absorbing surface layer (62), and a magnetic adsorption block (63). The first magnetic absorbing surface layer (61) is fixedly mounted on the measuring instrument body, the second magnetic absorbing surface layer (62) is fixedly mounted on the measuring device (2), one side of the magnetic adsorption block (63) is fixedly mounted on the second magnetic absorbing surface layer (62), and the other side of the magnetic adsorption block (63) is adsorbed on the first magnetic absorbing surface layer (61) and can move on the first magnetic absorbing surface layer (61) to adjust the position of the measuring device (2).

7. The handheld pupil measuring instrument according to claim 6, characterized in that, The magnetic adsorption block (63) includes a magnetic adsorption block body (631) and a first sliding layer (632). The first sliding layer (632) is fixedly disposed on the magnetic adsorption block body (631) and abuts against the first magnetic adsorption surface layer (61).

8. The handheld pupil measuring instrument according to claim 1, characterized in that, The measuring instrument body (1) includes a power switch (11), a battery (12) and a handheld tube (13). The power switch (11) is fixedly mounted on the handheld tube (13). The battery (12) is installed inside the handheld tube (13). The battery (12) is electrically connected to the measuring device (2). The power switch (11) is used to control the on / off state of the electrical connection.

9. The handheld pupil measuring instrument according to claim 1, characterized in that, The measuring device (2) includes a light source (21), a light source cover (22), and a lens (23). The lens (23) is fixedly mounted on the light source cover (22), and the light source (21) is fixedly mounted on the light source cover (22) so that it shines on the patient's pupil through the lens (23).

10. The handheld pupil measuring device according to claim 9, characterized in that, The lens (23) is provided with a horizontal projection scale and a vertical projection scale.

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