Cataract visual function inspection lamp

Abstract

The cataract visual function inspection lamp comprises a lens body, a holding assembly, a stabilizing assembly and a light supplementing assembly, the lens body is composed of a shell of an annular structure, the holding assembly is composed of a handle, the handle is fixedly connected to the bottom of the shell, a pull-down mechanism is fixedly connected to the side wall of the top of a sliding cover, and the stabilizing assembly is composed of a vertical rod. The vertical rod is fixedly connected with the top of the shell, an adjusting seat is slidably connected into the vertical rod, one end of the adjusting seat is movably connected with a contact mechanism, and a limiting mechanism side is arranged on one side of the adjusting seat. The portable inspection lamp is used for visual function inspection of a cataract patient, the floodlight is used for light source irradiation, high-intensity light irradiation is achieved through the lamp body, the inspection lamp can be properly used according to different disease degrees of the patient, the angle of the lamp body is convenient to adjust, the angle of the light source is adjusted through the rotatable reflecting mirror, and the inspection effect is good. During examination, the contact block is pulled to move downwards, so that the eyes of the patient are opened for examination, and the multifunctionality of the examination lamp is improved.

Description

Technical Field

[0001] The invention relates to a cataract visual function inspection lamp, belonging to the technical field of cataract visual function inspection. Background Art

[0002] Cataract visual function examination is an important means to assess the degree of visual impairment of patients, including visual acuity examination, contrast sensitivity test, glare test, color vision test, potential vision assessment and other auxiliary examinations.

[0003] The vision test includes naked eye vision, corrected vision and pinhole vision test to evaluate the impact of lens opacity on central vision. If the corrected vision is ≤0.5 or affects the quality of life, surgical intervention may be considered; the contrast sensitivity test detects the patient's contrast sensitivity at different spatial frequencies. Cataract patients often show decreased sensitivity in the medium and high frequency areas; the glare test simulates a strong light environment (such as a glare tester) to evaluate the degree of light scattering caused by lens opacity in patients, helping to determine the severity of visual interference; common methods for color vision testing include the Farnsworth-Munsell 100 hue test and the Ishihara color blindness book; potential vision assessment can predict the possible visual recovery after cataract surgery and exclude the influence of retinal or optic nerve lesions. Common methods include laser interferometer fringe vision (LI) and potential visual acuity meter (PAM); other auxiliary examinations such as visual field examinations can exclude complications such as glaucoma.

[0004] Cataract visual function examination requires a combination of multiple tests to comprehensively evaluate the patient's visual status, including visual acuity, contrast sensitivity, color vision, visual field, etc. These examinations not only help diagnose the severity of cataracts, but also provide a basis for the formulation of surgical plans and the prediction of postoperative effects. It is recommended that patients complete the examination under the guidance of a professional ophthalmologist.

[0005] Cataract visual function examination usually adopts direct observation and uses examination lights to clarify the situation. When using examination lights for examination, because the existing examination lights are held by the doctor and examined, the patient may cause eye shaking and blinking due to nervousness, which makes it difficult for the doctor to conduct effective examination, and the patient's eyes cannot be effectively limited. In addition, it is not easy to open the eyelids when the eyes are narrowly opened, which brings inconvenience to the doctor's examination. It is also necessary to maintain a specific distance of illumination for examination, which makes it difficult to maintain the position and height of the examination lamp, which can easily cause soreness in the doctor's handle. In addition, light stimulation is needed during the examination process, and it is not easy to adjust the light angle and light type during the examination process according to the examination needs. In addition, it is not easy to quickly adjust the examination light when performing light stimulation at different angles, which brings inconvenience to the doctor's operation. Summary of the invention

[0006] The present invention provides a cataract visual function examination lamp to solve the technical problem of inconvenient adjustment of the light angle during cataract visual function examination.

[0007] The present invention solves the above technical problems through the following technical solutions: The present invention provides a cataract visual function examination lamp, which includes: A lens main body, which is composed of a housing with an annular structure. A diffused light lamp for cataract visual function detection is embedded on the surface of the housing, and a reflector is provided at the top of the housing; A holding component, which is composed of a handle. The handle is fixedly connected to the bottom of the housing, and a sliding cover is slidably connected to the surface of the handle. A pulling mechanism is fixedly connected to the top side wall of the sliding cover; A stabilizing component, which is composed of a vertical rod. The cross-section of the vertical rod is a U-shaped structure and is fixedly connected to the top of the housing. The reflector is arranged inside the bottom end of the vertical rod. An adjusting seat is slidably connected inside the vertical rod above the reflector. One end of the adjusting seat is movably connected with a contact mechanism, and the contact mechanism and the pulling mechanism are parallelly distributed and are respectively located at the upper and lower ends of the eye; A supplementary lighting component, which is composed of a lamp body. The lamp body is threadedly installed on a lamp holder, and the lamp holder is rotatably connected to the inside of the adjusting seat. A limiting mechanism is provided on one side of the adjusting seat, and the limiting mechanism is located on both sides of the lamp body for limiting after the lamp body is stored.

[0008] In this technical solution, a lens body for visual function examination is movably sleeved inside the housing. The inner circles on both sides of the housing are respectively threadedly connected with a rear cover and a front cover, and the rear cover and the front cover are respectively fitted and sleeved with both ends of the lens body. A rubber sleeve is fitted and sleeved on the edge of the rear cover, and a diffused light lamp is provided on the edge of the housing on one side of the front cover, and the diffused light lamp is correspondingly arranged below the reflector.

[0009] In this technical solution, an arc-shaped guiding groove is opened at the top of the housing. The cross-section of the guiding groove is a T-shaped structure and is arranged at the edge of the housing. A T-shaped guiding rod is slidably connected inside the guiding groove, and the guiding rod is fixedly connected to the inner surface of the reflector.

[0010] In this technical solution, a battery compartment is opened inside the handle. A battery cover is fitted and connected to the surface of the handle at the outer opening of the battery compartment. Guide grooves are opened on both sides of the handle, and the guide grooves are symmetrically arranged on both sides of the sliding cover. The sliding cover is a U-shaped structure and is fitted and connected to the surface of the handle. Guide blocks are fixedly connected to the inner walls at both ends of the sliding cover, and the guide blocks are slidably connected to the inside of the guide grooves.

[0011] In this technical solution, two symmetrically distributed card slots are provided on the surface of the sliding cover. A pressing plate is rotatably connected to the surface of the sliding cover. The bottom end of the pressing plate is connected to the sliding cover. The top end of the pressing plate is connected to the surface of the sliding cover through a spring. Two L-shaped blocks are fixedly connected to the bottom end of the pressing plate, and the two blocks are correspondingly distributed with the card slots.

[0012] In this technical solution, the pulling-down mechanism is composed of a sleeve plate and a movable rod. The sleeve plate is fixedly connected to the top side wall of the sliding cover. The sleeve plate is a square hollow structure. A movable rod is movably sleeved inside the sleeve plate. The movable rod extends to the outside of the sleeve plate and is fixedly connected to a contact block. The surface of the contact block is made of a soft material with an arc-shaped structure. One end of the movable rod located inside the sleeve plate is threadedly connected to a knob. The knob is located inside a long hole provided on the sleeve plate, and the knob contacts the top surface of the sleeve plate.

[0013] In this technical solution, a chute is provided on the inner wall of the vertical rod. Two sliders are fixedly connected to the side end of the adjusting seat. The two sliders are symmetrically distributed on both sides of the adjusting seat, and each slider is slidably connected to the inside of the chute. A T-shaped groove is provided inside the top end of the adjusting seat, and a contact mechanism is slidably connected to the inside of the T-shaped groove.

[0014] In this technical solution, the contact mechanism is composed of a connecting rod and a toothed rod. A toothed rod is fixedly connected to the middle of the top surface of the connecting rod. The connecting rod and the toothed rod are both slidably connected to the inside of the T-shaped groove. The end parts of the connecting rod and the toothed rod are both fixedly connected to a fixing block, and the fixing block is fitted and sleeved inside the fitting block. A spiral shaft is rotatably connected to the adjusting seat above the T-shaped groove. The spiral shaft is meshed with the top of the toothed rod, and a rotating handle is fixedly connected to one end of the spiral shaft.

[0015] In this technical solution, the limiting mechanism is composed of a ratchet and a pull rod. The ratchet is fixedly connected to the outer walls on both sides of the lamp holder. The ratchet is correspondingly distributed with an L-shaped pull rod. One end of the pull rod is provided with ratchet teeth connected to the ratchet, and the other end of the pull rod is inserted through the inner wall of the bottom end of the adjusting seat. A connecting block is fixedly connected to the middle of the pull rod. The connecting block is connected to the inner wall of the adjusting seat through a tension spring. The end parts of the pull rod located outside the adjusting seat are respectively fixedly connected to both ends of a push plate.

[0016] In this technical solution, two symmetrically distributed guide sleeves are fixedly connected to the top of the adjusting seat. The cross section of the guide sleeve is a U-shaped structure and is arranged on one side of the T-shaped groove. A resisting rod is slidably connected to the inside of the guide sleeve. One end of the resisting rod is attached to the inner wall of the vertical rod. A chuck is rotatably connected to the top surface of the adjusting seat between the two guide sleeves. The chuck is a circular structure. Two symmetrically distributed grooves are provided on the edge of the chuck, and the edge of the chuck contacts the other end of the resisting rod.

[0017] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0018] The positive and progressive effects of the present invention are: The cataract visual function examination lamp proposed above adopts a convenient examination lamp for visual function examination of cataract patients. It is convenient for doctors to hold and use, and can realize effective observation of cataract patients. It uses an astigmatism lamp for light source irradiation to check the light sensitivity of cataract patients, and realizes high-intensity light irradiation through the lamp body. It can be used appropriately according to the different degrees of the patient's illness. The angle of the lamp body is convenient to adjust, and a rotatable reflector is used to adjust the angle of the light source, so that the irradiation of the light source at an inclined angle and a horizontal angle can be realized when stimulating the eyes, ensuring the inspection effect, and convenient for storage after use, improving the convenience of use of the inspection lamp, and a fitting block is provided on the inspection lamp for supporting the forehead, so as to ensure that the distance of the light source is the same during the inspection, avoiding the problem of handle soreness caused by the doctor holding it for a long time, and at the same time improving the accuracy of the inspection, and a contact block is provided under the shell for contact with the skin under the eye, and the contact block is pulled down during the inspection to ensure that the patient's eyes are open for inspection, avoiding the problem of frequent blinking caused by the patient's tension, ensuring the smoothness of the doctor's inspection process, and improving the versatility of the inspection lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the lens body of the present invention.

[0021] Figure 3 It is a schematic diagram of the overall internal three-dimensional structure of the present invention.

[0022] Figure 4 For the present invention Figure 3 Schematic diagram of the local three-dimensional structure at the central stabilizing component.

[0023] Figure 5 It is a schematic diagram of the half-section structure of the present invention.

[0024] Figure 6 For the present invention Figure 5 Schematic diagram of the local enlarged structure at point A in the middle.

[0025] Figure 7 For the present invention Figure 5 Schematic diagram of the partial three-dimensional structure of the middle grip component.

[0026] Figure 8 It is a schematic diagram of the local three-dimensional structure of the upright pole of the present invention.

[0027] Figure 9 For the present invention Figure 8 Schematic diagram of the local enlarged structure at point B in the middle.

[0028] Figure 10 This is a schematic front view structure diagram of the present invention.

[0029] Explanation of reference numerals 100, lens body; 101, outer shell; 102, lens body; 103, rear cover; 104, front cover; 105, diffused light lamp; 106, guiding groove; 107, guiding rod; 108, reflecting mirror; 109, rubber sleeve; 200, holding assembly; 201, handle; 202, battery compartment; 203, battery cover; 204, guiding groove; 205, sliding cover; 206, guiding block; 207, card slot; 208, pressing plate; 209, clamping block; 210, spring; 211, sleeve plate; 212, movable rod; 213, contact block; 214, knob; 300, stabilizing assembly; 301, vertical rod; 302, sliding groove; 303, adjusting seat; 304, slider; 305, T-shaped groove; 306, connecting rod; 307, toothed rod; 308, fixing block; 309, fitting block; 310, screw shaft; 311, rotating handle; 400, supplementary lighting assembly; 401, lamp body; 402, lamp socket; 403, ratchet; 404, pull rod; 405, connecting block; 406, tension spring; 407, ratchet teeth; 408, push plate; 409, guide sleeve; 410, abutting rod; 411, chuck. Detailed implementation manners

[0030] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the described embodiments.

[0031] As Figure 1-10 shown, the cataract visual function examination lamp includes: A lens body 100, the lens body 100 is composed of an outer shell 101 with an annular structure, and a diffused light lamp 105 for cataract visual function detection is embedded on the surface of the outer shell 101, and a reflecting mirror 108 is provided at the top of the outer shell 101; A holding assembly 200, the holding assembly 200 is composed of a handle 201, the handle 201 is fixedly connected to the bottom of the outer shell 101, and a sliding cover 205 is slidably connected to the surface of the handle 201, and a downward pulling mechanism is fixedly connected to the top side wall of the sliding cover 205; A stabilizing assembly 300, the stabilizing assembly 300 is composed of a vertical rod 301, the cross section of the vertical rod 301 is a U-shaped structure and is fixedly connected to the top of the outer shell 101, the reflecting mirror 108 is arranged inside the bottom end of the vertical rod 301, and an adjusting seat 303 is slidably connected inside the vertical rod 301 above the reflecting mirror 108, one end of the adjusting seat 303 is movably connected with a contact mechanism, and the contact mechanism and the downward pulling mechanism are parallelly distributed and are respectively located at the upper and lower ends of the eye; The supplementary light assembly 400, the supplementary light assembly 400 is composed of a lamp body 401, the lamp body 401 is threadedly installed on a lamp socket 402, the lamp socket 402 is rotatably connected inside an adjusting base 303, a limiting mechanism is provided on one side of the adjusting base 303, and the limiting mechanism is located on both sides of the lamp body 401 for limiting the lamp body 401 after being stored.

[0032] A lens body 102 for visual function examination is movably sleeved inside the outer shell 101. The inner rings on both sides of the outer shell 101 are respectively threadedly connected with a rear cover 103 and a front cover 104, and the rear cover 103 and the front cover 104 are respectively fitted and sleeved at both ends of the lens body 102. A rubber sleeve 109 is fitted and sleeved at the edge of the rear cover 103, and a diffused light lamp 105 is provided at the edge of the outer shell 101 on one side of the front cover 104. The diffused light lamp 105 is correspondingly arranged below a reflecting mirror 108; an arc-shaped guiding groove 106 is opened at the top of the outer shell 101. The cross-section of the guiding groove 106 is a T-shaped structure and is arranged at the edge of the outer shell 101. A T-shaped guiding rod 107 is slidably connected inside the guiding groove 106, and the guiding rod 107 is fixedly connected to the inner surface of the reflecting mirror 108.

[0033] In this technical solution, the lens body 102 is installed inside the outer shell 101. While tightening the front cover 104 and the rear cover 103 to complete the installation of the housing, the front cover 104 and the rear cover 103 press and fix the lens body 102 to achieve quick installation. A diffused light lamp 105 is provided for irradiating the patient's eyes to check the cataract visual function. When using the supplementary light assembly 400 for examination, the light angle can be adjusted through the reflecting mirror 108. When not in use, the reflecting mirror 108 is stored inside the bottom end of the vertical rod 301. When in use, only need to push the reflecting mirror 108 to drive the guiding rod 107 to slide in the guiding groove 106, and use the interference fit between the guiding rod 107 and the guiding groove 106 to achieve angle adjustment. The supplementary light assembly 400 can directly irradiate the eyes at an inclined angle, or irradiate the supplementary light assembly 400 onto the reflecting mirror 108, and use the reflecting mirror 108 to make the reflected light irradiate the eyes horizontally, which can be adjusted according to the usage needs to ensure the comprehensiveness of the examination.

[0034] A battery compartment 202 is provided inside the handle 201. A battery cover 203 is fitted and connected to the surface of the handle 201 at the outer opening of the battery compartment 202. Guide grooves 204 are provided on both sides of the handle 201. The guide grooves 204 are symmetrically arranged on both sides of the sliding cover 205. The sliding cover 205 is of a U-shaped structure and is fitted and connected to the surface of the handle 201. Guide blocks 206 are fixedly connected to the inner walls at both ends of the sliding cover 205, and the guide blocks 206 are slidably connected to the inside of the guide grooves 204. Two symmetrically distributed card slots 207 are provided on the surface of the sliding cover 205. A pressing plate 208 is rotatably connected to the surface of the sliding cover 205. The bottom end of the pressing plate 208 is connected to the sliding cover 205. The top end of the pressing plate 208 is connected to the surface of the sliding cover 205 through a spring 210. Two L-shaped blocks 209 are fixedly connected to the bottom end of the pressing plate 208, and the two blocks 209 are correspondingly distributed with the card slots 207.

[0035] In this technical solution, the handle 201 is provided to facilitate the holding of the inspection lamp. When holding, the pressing plate 208 can be pressed. When the pressing plate 208 rotates around its bottom end, the pressing plate 208 drives the block 209 to separate from the card slot 207. At this time, while pressing the pressing plate 208, the sliding cover 205 is moved downward. When the sliding cover 205 drives the guide block 206 to move in the guide groove 204, the sliding cover 205 slides on the surface of the handle 201 and drives the downward pulling mechanism to move downward to open the eyes, facilitating a comprehensive inspection of the eyes. When the pressing plate 208 is released, the elasticity of the spring 210 at this time pushes the pressing plate 208 to reset, thereby driving the block 209 to be clamped at the card slot 207, thereby realizing the limitation of the downward pulling mechanism. During use, the lengths of the contact mechanism and the downward pulling mechanism are adjusted so that the contact mechanism contacts the forehead skin above the eyes, and the downward pulling mechanism contacts the skin at the bottom of the eyes. The downward pulling mechanism is moved to open the eyelids, facilitating a convenient inspection and solving the problem of frequent blinking of patients.

[0036] The downward pulling mechanism is composed of a sleeve plate 211 and a movable rod 212. The sleeve plate 211 is fixedly connected to the top side wall of the sliding cover 205. The sleeve plate 211 is of a square hollow structure. The movable rod 212 is movably sleeved inside the sleeve plate 211. The movable rod 212 extends to the outside of the sleeve plate 211 and is fixedly connected to the contact block 213. The surface of the contact block 213 is made of a soft material with an arc-shaped structure. One end of the movable rod 212 located inside the sleeve plate 211 is threadedly connected with a knob 214. The knob 214 is located inside the long hole provided on the sleeve plate 211, and the knob 214 contacts the top surface of the sleeve plate 211.

[0037] In this technical solution, when the movable rod 212 is moved inside the sleeve plate 211 and the movable rod 212 drives the knob 214 to move, the knob 214 is tightened to fix the movable rod 212 inside the sleeve plate 211, thereby adjusting the position of the contact block 213 for the contact block 213 to contact the patient's skin, enabling the adjustment of the distance between the diffused light lamp 105 and the eyes, and can be appropriately adjusted according to the patient's condition.

[0038] A chute 302 is provided on the inner wall of the vertical rod 301. Two sliders 304 are fixedly connected to the side ends of the adjusting seat 303. The two sliders 304 are symmetrically distributed on both sides of the adjusting seat 303, and each slider 304 is slidably connected to the inside of the chute 302. A T-shaped groove 305 is provided inside the top end of the adjusting seat 303, and a contact mechanism is slidably connected to the inside of the T-shaped groove 305. The contact mechanism is composed of a connecting rod 306 and a toothed rod 307. A toothed rod 307 is fixedly connected to the middle of the top surface of the connecting rod 306. The connecting rod 306 and the toothed rod 307 are both slidably connected to the inside of the T-shaped groove 305. The ends of the connecting rod 306 and the toothed rod 307 are both fixedly connected to a fixed block 308, and the fixed block 308 is fitted and sleeved inside the fitting block 309. A spiral shaft 310 is rotatably connected to the adjusting seat 303 above the T-shaped groove 305. The spiral shaft 310 is meshed with the top of the toothed rod 307, and a rotating handle 311 is fixedly connected to one end of the spiral shaft 310.

[0039] In this technical solution, when the adjusting seat 303 is moved inside the vertical rod 301, the height adjustment of the adjusting seat 303 is realized by the movement of the slider 304 inside the chute 302. When adjusting the contact mechanism, the connecting rod 306 and the toothed rod 307 can move inside the T-shaped groove 305. During adjustment, by rotating the rotating handle 311, when the rotating handle 311 drives the spiral shaft 310 to rotate, the toothed rod 307 is driven to translate by the spiral connection method, thereby driving the position adjustment of the fitting block 309 on the fixed block 308.

[0040] The limiting mechanism is composed of a ratchet wheel 403 and a pull rod 404. The ratchet wheel 403 is fixedly connected to the outer walls on both sides of the lamp socket 402. The ratchet wheel 403 and the L-shaped pull rod 404 are correspondingly distributed. One end of the pull rod 404 is provided with ratchet teeth 407 connected to the ratchet wheel 403, and the other end of the pull rod 404 penetrates and is inserted into the inner wall of the bottom end of the adjusting seat 303. A connecting block 405 is fixedly connected to the middle of the pull rod 404. The connecting block 405 is connected to the inner wall of the adjusting seat 303 through a tension spring 406. The end parts of the pull rod 404 located outside the adjusting seat 303 are fixedly connected to both ends of a push plate 408. Two symmetrically distributed guide sleeves 409 are fixedly connected to the top of the adjusting seat 303. The cross section of the guide sleeve 409 is a U-shaped structure and is arranged on one side of the T-shaped groove 305. A resisting rod 410 is slidably connected inside the guide sleeve 409. One end of the resisting rod 410 is in close contact with the inner wall of the vertical rod 301. A chuck 411 is rotatably connected to the top surface of the adjusting seat 303 between the two guide sleeves 409. The chuck 411 is a circular structure. Two symmetrically distributed grooves are formed on the edge of the chuck 411, and the edge of the chuck 411 is in contact with the other end of the resisting rod 410.

[0041] In this technical solution, when the lamp body 401 needs to be used, the lamp body 401 is installed on the lamp socket 402, and the push plate 408 is pressed to drive the pull rod 404 to move. The ratchet teeth 407 on the pull rod 404 are separated from the ratchet wheel 403. At this time, the lamp body 401 rotates around the lamp socket 402 to the lower side and tends to be in a vertical position. Then the push plate 408 is released, and the elastic force of the tension spring 406 pulls the connecting block 405 and the pull rod 404 to reset, so that the ratchet teeth 407 are in contact with the surface of the ratchet wheel 403. When the lamp body 401 is pushed, the lamp body 401 moves into the adjusting seat 303. When released, the cooperation between the ratchet wheel 403 and the ratchet teeth 407 realizes self-locking, thereby realizing one-way adjustment of the direction; after the height of the adjusting seat 303 is adjusted, the chuck 411 is rotated so that the grooves on both sides of it are staggered from the resisting rod 410. The edge of the chuck 411 contacts the resisting rod 410 and pushes it to move inside the guide sleeve 409, so that the resisting rod 410 abuts against the inner wall of the vertical rod 301 to lock the adjusting seat 303. After conveniently adjusting the height and angle of the lamp body 401, the illumination at the eyes is realized, and the convenience of visual function examination for cataract patients is improved.

[0042] The present invention is not limited to the above embodiments. No matter any changes are made in its shape or structure, they all fall within the protection scope of the present invention. The protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. Cataract visual function examination lamp, characterized in that: The cataract visual function examination lamp comprises: A lens body (100), the lens body (100) comprising a housing (101) of a circular ring structure, an astigmatism lamp (105) for cataract visual function detection being embedded on the surface of the housing (101), and a reflector (108) being provided on the top of the housing (101); A grip assembly (200), the grip assembly (200) comprising a handle (201), the handle (201) being fixedly connected to the bottom of the housing (101), a sliding cover (205) being slidably connected to the surface of the handle (201), and a pull-down mechanism being fixedly connected to the top side wall of the sliding cover (205); A stabilizing component (300), the stabilizing component (300) comprising a vertical rod (301), the vertical rod (301) having a U-shaped cross-section and fixedly connected to the top of the housing (101), a reflector (108) disposed inside the bottom end of the vertical rod (301), an adjusting seat (303) slidably connected inside the vertical rod (301) located above the reflector (108), one end of the adjusting seat (303) being movably connected to a contact mechanism, and the contact mechanism and the pull-down mechanism are distributed in parallel and are located at the upper and lower ends of the eye, respectively; A fill light assembly (400), the fill light assembly (400) comprising a lamp body (401), the lamp body (401) being threadedly mounted on a lamp holder (402), the lamp holder (402) being rotatably connected to the inside of an adjustment holder (303), a limiting mechanism being provided on one side of the adjustment holder (303), the limiting mechanism being located on both sides of the lamp body (401) for limiting the position of the lamp body (401) after it is stored.

2. The cataract vision function testing lamp according to claim 1, characterized in that: A mirror body (102) for visual function testing is movably sleeved inside the housing (101), and a rear cover (103) and a front cover (104) are respectively threadedly connected to the inner rings on both sides of the housing (101), and the rear cover (103) and the front cover (104) are respectively engaged and sleeved with the two ends of the mirror body (102), and a rubber sleeve (109) is engaged and sleeved on the edge of the rear cover (103), and a diffuser lamp (105) is provided on the edge of the housing (101) located on one side of the front cover (104), and the diffuser lamp (105) is correspondingly arranged below the reflector (108).

3. The cataract vision function testing lamp according to claim 1, characterized in that: A guide groove (106) with an arc structure is provided on the top of the housing (101); the guide groove (106) has a T-shaped cross section and is arranged at the edge of the housing (101); a guide rod (107) with a T-shaped structure is slidably connected inside the guide groove (106); and the guide rod (107) is fixedly connected to the inner surface of the reflector (108).

4. The cataract vision function testing lamp according to claim 1, characterized in that: A battery compartment (202) is provided inside the handle (201), and a battery cover (203) is engaged and connected to the surface of the handle (201) at the outer opening of the battery compartment (202). Guide grooves (204) are provided on both sides of the handle (201), and the guide grooves (204) are symmetrically arranged on both sides of a sliding cover (205). The sliding cover (205) is a U-shaped structure and is fitted and connected to the surface of the handle (201). Guide blocks (206) are fixedly connected to the inner walls of both ends of the sliding cover (205), and the guide blocks (206) are slidably connected to the inside of the guide grooves (204).

5. The cataract vision function testing lamp as claimed in claim 4, characterized in that: The surface of the sliding cover (205) is provided with two symmetrically distributed card slots (207), the surface of the sliding cover (205) is rotatably connected to a pressure plate (208), the bottom end of the pressure plate (208) is connected to the sliding cover (205), the top end of the pressure plate (208) is connected to the surface of the sliding cover (205) via a spring (210), and the bottom end of the pressure plate (208) is fixedly connected to two L-shaped card blocks (209), and the two card blocks (209) are distributed correspondingly to the card slots (207).

6. The cataract vision function testing lamp according to claim 1, characterized in that: The pull-down mechanism is composed of a sleeve plate (211) and a movable rod (212). The sleeve plate (211) is fixedly connected to the top side wall of the sliding cover (205). The sleeve plate (211) is a square hollow structure. The movable rod (212) is movably sleeved inside the sleeve plate (211). The movable rod (212) extends to the outside of the sleeve plate (211) and is fixedly connected to a contact block (213). The surface of the contact block (213) is made of a soft material with an arc structure. One end of the movable rod (212) located inside the sleeve plate (211) is threadedly connected to a knob (214). The knob (214) is located inside a long hole opened in the sleeve plate (211), and the knob (214) is in contact with the top surface of the sleeve plate (211).

7. The cataract vision function testing lamp according to claim 1, characterized in that: The inner wall of the vertical rod (301) is provided with a slide groove (302), and the side end of the adjustment seat (303) is fixedly connected to two sliders (304), the two sliders (304) are symmetrically distributed on both sides of the adjustment seat (303), and each slider (304) is slidably connected to the inside of the slide groove (302), and the top end of the adjustment seat (303) is provided with a T-shaped groove (305), and the inside of the T-shaped groove (305) is slidably connected to a contact mechanism.

8. The cataract vision function testing lamp as claimed in claim 7, characterized in that: The contact mechanism is composed of a connecting rod (306) and a gear rod (307); the middle of the top surface of the connecting rod (306) is fixedly connected to the gear rod (307); the connecting rod (306) and the gear rod (307) are both slidably connected to the inside of the T-shaped slot (305); the ends of the connecting rod (306) and the gear rod (307) are both fixedly connected to a fixed block (308); the fixed block (308) is engaged with the inside of a fitting block (309); the adjustment seat (303) located above the T-shaped slot (305) is rotatably connected to a spiral shaft (310); the spiral shaft (310) is meshedly connected to the top of the gear rod (307); and one end of the spiral shaft (310) is fixedly connected to a rotary handle (311).

9. The cataract vision function testing lamp according to claim 1, characterized in that: The limiting mechanism is composed of a ratchet (403) and a pull rod (404); the ratchet (403) is fixedly connected to the outer walls of both sides of the lamp holder (402); the ratchet (403) and the pull rod (404) of the L-shaped structure are distributed correspondingly; one end of the pull rod (404) is provided with a ratchet (407) connected to the ratchet (403); the other end of the pull rod (404) is inserted through the inner wall of the bottom end of the adjustment seat (303); a connecting block (405) is fixedly connected to the middle of the pull rod (404); the connecting block (405) is connected to the inner wall of the adjustment seat (303) through a tension spring (406); and the ends of the pull rod (404) located outside the adjustment seat (303) are respectively fixedly connected to the two ends of the push plate (408).

10. The cataract vision function testing lamp according to claim 9, characterized in that: The top of the adjustment seat (303) is fixedly connected to two symmetrically distributed guide sleeves (409); the guide sleeve (409) has a U-shaped cross-section and is arranged on one side of the T-shaped groove (305); a push rod (410) is slidably connected inside the guide sleeve (409); one end of the push rod (410) is closely connected to the inner wall of the vertical rod (301); a chuck (411) is rotatably connected to the top surface of the adjustment seat (303) located between the two guide sleeves (409); the chuck (411) is a circular structure; two symmetrically distributed grooves are formed on the edge of the chuck (411); and the edge of the chuck (411) is in contact with the other end of the push rod (410).

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