Adjustable ophthalmic visual field testing device

Abstract

The present invention discloses an adjustable ophthalmic visual field examination device, which belongs to the technical field of ophthalmology and aims at the problem that simple up and down adjustment cannot effectively meet the different visual field examination requirements of all people. The device comprises a U-shaped plate, wherein a vertical plate is arranged on one side of the U-shaped plate, a first opening is provided at a vertical position in the middle of one side surface of the vertical plate, second openings are provided on both sides at a horizontal position in the middle of one side surface of the vertical plate, and a first guide rail is fixed at a vertical position in the middle of one side surface of the vertical plate. The present invention arranges a first indicator light, a first threaded rod, a first movable column, a first piston, a second sleeve, a third sleeve and a second piston, so that the vertical visual field of a patient's eyes in a static or moving state can be detected, thereby being able to test the horizontal and vertical visual fields of the patient's eyes in a static or moving state, thereby improving the practicability of the device and being able to examine different visual fields of different people.

Description

Technical Field

[0001] The invention belongs to the technical field of ophthalmology, and in particular relates to an adjustable ophthalmic visual field testing device. Background Art

[0002] When using existing ophthalmic visual field examination devices, most of them only use motors to achieve simple up and down adjustments. However, people who come for eye examinations are of all kinds, and simple up and down adjustments cannot effectively meet the different visual field range examination needs of all people.

[0003] Therefore, there is a need for an adjustable ophthalmic visual field examination device to solve the problem in the prior art that simple up and down adjustment cannot effectively meet the different visual field range examination needs of all people. Summary of the invention

[0004] The object of the present invention is to provide an adjustable ophthalmic visual field testing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable ophthalmic visual field examination device, comprising a U-shaped plate, a vertical plate is arranged on one side of the U-shaped plate, a first opening is opened at a vertical position in the middle of one side of the vertical plate, and second openings are opened on both sides at a horizontal position in the middle of one side of the vertical plate, a first guide rail is fixed at a vertical position in the middle of one side of the vertical plate, and second guide rails are fixed on both sides at a horizontal position in the middle of one side of the vertical plate, the first guide rail corresponds to the first opening, and two second guide rails correspond to the corresponding second openings respectively, two symmetrically distributed first T-shaped bars are movably engaged in the first guide rail, a first outer cover is fixed at one end of the first T-shaped bar, a first indicator light is fixed to a side of an inner wall of the first outer cover, the other end of the first T-shaped bar passes through the first opening, and a second A T-shaped bar, a second outer cover is fixed at one end of the second T-shaped bar, a second indicator light is fixed to a side surface of an inner wall of the second outer cover, the other end of the second T-shaped bar passes through the corresponding second opening, a third outer cover is fixed to the middle part of a side surface of the first guide rail, a third indicator light is fixed to a side surface of an inner wall of the third outer cover, two first T-shaped bars are respectively fixed with fixing rods on one side surface away from each other, an L-shaped plate is arranged on one side of the top surface of the U-shaped plate, one side surface of the L-shaped plate is fixed to a side surface of the vertical plate, a sleeve is fixed to one side surface of the L-shaped plate, a connecting bar is fixed to one end of the sleeve, a third sleeve is respectively fixed to the top and bottom surfaces of one side of the connecting bar, a second piston is movably engaged in the third sleeve, a second piston is fixed to a second moving column on a side surface away from the connecting bar, one end of the second moving column is fixed to the fixing rod, and a driving component is arranged on one side of the top surface of the L-shaped plate.

[0006] Further, the driving assembly includes a first sleeve, a first threaded rod is movably connected between two opposite sides of an inner wall of the first sleeve, a moving bar is movably engaged in the first sleeve, the moving bar is movably connected to the outer wall of the first threaded rod, a second sleeve is fixed to the inner wall of the sleeve, a first piston is movably engaged in the second sleeve, a first moving column is fixed to one side of the first piston, the first moving column movably passes through the second sleeve, and one end of the first moving column is fixed to one side of the moving bar.

[0007] Furthermore, a connecting pipe is respectively connected through the top surface and the bottom surface of one side of the second sleeve, and one end of the connecting pipe is connected through the outer side wall of the third sleeve.

[0008] Furthermore, two second threaded rods are movably connected to one side of the top surface of the U-shaped plate, a bottom groove is opened on the bottom surface of the L-shaped plate, the second threaded rod is movably connected to the top surface of the inner wall of the bottom groove, a first gear is fixed to the bottom of the outer wall of the second threaded rod, a rotating shaft is fixed to one side of the bottom surface of the U-shaped plate, a second gear is fixed to the outer wall of the rotating shaft near the top position, the first gear is meshed with the second gear, and a first hand wheel is fixed to the bottom of the outer wall of the rotating shaft.

[0009] Furthermore, a C-shaped frame is fixed to the top surface of the U-shaped plate away from the side of the vertical plate, and two locking rods are movably connected to the inner side walls of the C-shaped frame on one side close to each other, a mounting rod is fixed to one end of two adjacent locking rods, a cross bar is fixed to the middle of one side of the mounting rod, an arc-shaped plate is fixed to the other end of two adjacent locking rods, and a plurality of breathable cloth strips are fixed to one side of the arc-shaped plate.

[0010] Furthermore, two adjacent engaging rods are respectively fixed with a stabilizing plate on one side away from each other, a spring is fixed on one side of the stabilizing plate, and one end of the spring is fixed to the inner wall of the C-shaped frame.

[0011] Furthermore, limiting rods are respectively fixed to the tops of the two opposite side surfaces of the outer side wall of the C-shaped frame, and a C-shaped frame is movably engaged inside the two limiting rods, a triangular frame is fixed to the bottom end of the C-shaped frame, and the triangular frame cooperates with the cross bar, and a fixing column is fixed to the middle part of the top surface of the C-shaped frame, and a third threaded rod is movably connected to the top surface of the fixing column, and the third threaded rod is movably connected to the top surface of the C-shaped frame, and a second hand wheel is fixed to the top surface of the third threaded rod, a supporting arc plate is fixed to the top surface of the U-shaped plate away from the vertical plate, a protective pad is fixed to the top surface of the supporting arc plate, and a top opening is opened on the top surface of the U-shaped plate away from the vertical plate.

[0012] Furthermore, a first scale is fixed on one side of the first guide rail, a second scale is fixed on one side of the second guide rail, a first pointer is fixed on one side of the first T-bar, the first pointer corresponds to the first scale, and a second pointer is fixed on one side of the second T-bar, the second pointer corresponds to the second scale.

[0013] Furthermore, two first fixed blocks are fixed to a side of the L-shaped plate away from the vertical plate, a rotating rod is movably connected between the two first fixed blocks on a side close to each other, a second bevel gear is fixed to one end of the rotating rod, a first bevel gear is fixed to one end of the first threaded rod, the first bevel gear is meshed with the second bevel gear, a fixed plate is fixed to the top surface of the L-shaped plate, a rotating shaft is movably connected to a side of the fixed plate, pulleys are respectively fixed to an outer side wall of the rotating shaft and one side of an outer side wall of the rotating rod, a belt is movably connected between the two pulleys, and a handle is fixed to one end of the rotating shaft.

[0014] Furthermore, two second fixed blocks are fixed to the horizontal middle part of a side of the vertical plate away from the C-shaped frame, and a two-way threaded rod is movably connected between the two second fixed blocks close to each other on a side, and a third hand wheel is fixed to one end of the two-way threaded rod. Engaging grooves are respectively provided on opposite sides of the outer side wall of the vertical plate, and engaging blocks are respectively fixed to the inner side walls of the U-shaped plate close to each other on a side, and the engaging blocks are correspondingly and movably engaged in the engaging grooves.

[0015] Compared with the prior art, the adjustable ophthalmic visual field examination device provided by the present invention has at least the following beneficial effects:

[0016] (1) The bidirectional threaded rod and the second indicator light are provided so that the horizontal visual field of the patient's eyes when they are still or moving can be detected. The first indicator light, the first threaded rod, the first movable column, the first piston, the second sleeve, the third sleeve and the second piston are provided so that the vertical visual field of the patient's eyes when they are still or moving can be detected. Thus, the horizontal and vertical visual fields of the patient's eyes when they are still or moving can be tested, thereby improving the practicability of the device and being able to check the different visual fields of different people.

[0017] (2) The curved plate and breathable cloth strips can be used to fix the patient's head, thereby facilitating visual field examination of the patient.

[0018] (3) By providing the third outer cover and the third indicator light, the patient's eye field of vision can be kept in a fixed state, thereby facilitating detection of the horizontal and vertical field of vision of the patient's eyes in a static state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the rotating shaft structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the L-shaped plate structure of the present invention;

[0022] Figure 4 For the present invention Figure 3 A is a schematic diagram of the partially enlarged structure of the middle part;

[0023] Figure 5 It is a schematic diagram of the side view structure of the casing of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the curved plate of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the moving bar of the present invention;

[0026] Figure 8 This is a schematic diagram of the third sleeve structure of the present invention;

[0027] Fig. 9 This is a schematic diagram of the first sleeve structure of the present invention;

[0028] Fig.10 This is a schematic diagram of the structure of the second threaded rod of the present invention;

[0029] Fig.11 This is a schematic diagram of the bottom tank structure of the present invention;

[0030] Fig.12 This is a schematic diagram of the vertical plate structure of the present invention;

[0031] Fig.13 This is a schematic diagram of the U-shaped plate structure of the present invention;

[0032] Fig.14 This is a schematic diagram of the first guide rail structure of the present invention;

[0033] Fig.15 For the present invention Fig.14 A schematic diagram of the partially enlarged structure of B in the middle;

[0034] Fig.16 This is a schematic diagram of the first T-bar structure of the present invention;

[0035] Fig.17 This is a schematic diagram of the first opening structure of the present invention;

[0036] Fig.18 It is a schematic diagram of the C-frame structure of the present invention.

[0037] In the figure:

[0038] 100, U-shaped plate; 101, vertical plate; 102, first guide rail; 103, first T-shaped bar; 104, first outer cover; 105, first indicator light; 106, first scale; 107, first pointer;

[0039] 200, second guide rail; 201, second T-shaped bar; 202, second outer cover; 203, second indicator light; 204, second scale; 205, second pointer; 206, third outer cover; 207, third indicator light; 208, first opening; 209, second opening;

[0040] 300, L-shaped plate; 301, first sleeve; 302, first threaded rod; 303, moving bar; 304, sleeve; 305, second sleeve; 306, first moving column; 307, first piston; 308, connecting pipe; 309, connecting bar; 310, third sleeve; 311, second piston; 312, second moving column; 313, fixed rod;

[0041] 400, first bevel gear; 401, first fixed block; 402, rotating rod; 403, second bevel gear; 404, pulley; 405, belt; 406, rotating shaft; 407, fixed plate; 408, handle;

[0042] 500, second threaded rod; 501, bottom groove; 502, first gear; 503, rotating shaft; 504, second gear; 505, first hand wheel;

[0043] 600, C-shaped frame; 601, limiting rod; 602, C-shaped frame; 603, triangular frame; 604, fixing column; 605, third threaded rod; 606, second hand wheel; 607, top opening; 608, supporting arc plate; 609, protective pad;

[0044] 700, snap-fit ​​rod; 701, mounting rod; 702, cross bar; 703, curved plate; 704, breathable cloth strip; 705, stabilizing plate; 706, spring;

[0045] 800, second fixed block; 801, bidirectional threaded rod; 802, third hand wheel;

[0046] 900, a snap-fit ​​groove; 901, a snap-fit ​​block. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0048] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.

[0049] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0050] A specific embodiment of the present invention, as Figure 1-Figure 18As shown, an adjustable ophthalmic visual field examination device is disclosed, including a U-shaped plate 100, a vertical plate 101 is arranged on one side of the U-shaped plate 100, a first opening 208 is opened at a vertical position in the middle of one side of the vertical plate 101, and second openings 209 are opened on both sides at a horizontal position in the middle of one side of the vertical plate 101, a first guide rail 102 is fixed at a vertical position in the middle of one side of the vertical plate 101, and second guide rails 200 are fixed on both sides at a horizontal position in the middle of one side of the vertical plate 101, and the first guide rail 102 is fixed to the first guide rail 102. The first guide rail 102 is provided with a first T-shaped bar 103, and the first guide rail 102 is provided with a first T-shaped bar 103. The first guide rail 102 is provided with a first T-shaped bar 103, and the first guide rail 200 is provided with a second T-shaped bar 201. The first guide rail 202 is provided with a second T-shaped bar 201, and the second guide rail 200 is provided with a second T-shaped bar 201. A second outer cover 202 is fixed to the end, a second indicator light 203 is fixed to a side of the inner wall of the second outer cover 202, the other end of the second T-shaped bar 201 passes through the corresponding second opening 209, a third outer cover 206 is fixed to the middle of a side of the first guide rail 102, a third indicator light 207 is fixed to a side of the inner wall of the third outer cover 206, two first T-shaped bars 103 are fixed to a fixed rod 313 on a side away from each other, an L-shaped plate 300 is arranged on one side of the top surface of the U-shaped plate 100, and a side of the L-shaped plate 300 Fixed to one side of the vertical plate 101, a sleeve 304 is fixed to one side of the L-shaped plate 300, a connecting strip 309 is fixed to one end of the sleeve 304, a third sleeve 310 is fixed to the top and bottom surfaces of one side of the connecting strip 309 respectively, a second piston 311 is movably engaged in the third sleeve 310, a second movable column 312 is fixed to one side of the second piston 311 away from the connecting strip 309, one end of the second movable column 312 is fixed to the fixing rod 313, and a driving component is arranged on one side of the top surface of the L-shaped plate 300.

[0051] As a further solution of the present invention, the driving assembly includes a first sleeve 301, a first threaded rod 302 is movably connected between the opposite sides of the inner wall of the first sleeve 301, a moving bar 303 is movably engaged in the first sleeve 301, the moving bar 303 is movably connected to the outer wall of the first threaded rod 302, a second sleeve 305 is fixed to the inner wall of the sleeve 304, a first piston 307 is movably engaged in the second sleeve 305, a first moving column 306 is fixed to one side of the first piston 307, the first moving column 306 movably passes through the second sleeve 305, and one end of the first moving column 306 is fixed to one side of the moving bar 303.

[0052] The first movable column 306 can be moved by the provided driving assembly, thereby pushing the first piston 307 to move, so that the air in the second sleeve 305 is pushed and injected into the third sleeve 310, and finally the two fixed rods 313 are moved away from each other.

[0053] As a further solution of the present invention, a connecting pipe 308 is respectively connected to the top and bottom surfaces of one side of the second sleeve 305 , and one end of the connecting pipe 308 is connected to the outer side wall of the third sleeve 310 .

[0054] The connecting pipe 308 is provided so that the air in the second sleeve 305 can enter the third sleeve 310 through the connecting pipe 308 .

[0055] This solution has the following working process: when testing the patient's visual field, first take a stool and place it on one side of the U-shaped plate 100, then the patient sits on the stool, puts the head into the C-shaped frame 600, and places the chin on the protective pad 609. At this time, the patient's neck is located in the top opening 607. Then the medical staff manually turns the second hand wheel 606, and the rotation of the second hand wheel 606 drives the third threaded rod 605 to rotate. The rotation of the third threaded rod 605 drives the C-shaped frame 602 to move downward. The downward movement of the C-shaped frame 602 drives the two triangular frames 603 to move downward, and then pushes the cross bar 702 to move, and finally makes the two arc plates 703 approach each other, clamping and fixing the two sides of the patient's head, and the breathable cloth strip 704 protects the two sides of the patient's head. At this time, the spring 706 is stretched and then opened. For the third indicator light 207, the patient keeps his eyes level and gazes to see whether he can fully observe the light of the third indicator light 207. When the light of the third indicator light 207 is not observed or cannot be fully observed, the medical staff manually turns the first hand wheel 505. The rotation of the first hand wheel 505 drives the rotating shaft 503 to rotate. The rotation of the rotating shaft 503 drives the second gear 504 to rotate. The rotation of the second gear 504 drives the two first gears 502 to rotate, thereby making the two second threaded rods 500 rotate synchronously. The medical staff adjusts the height of the vertical plate 101 until the patient can fully observe the light of the third indicator light 207. At this time, the third indicator light 207 and the patient's eyes are on the same plane, and then turns off the third indicator light 207.

[0056] When testing the static horizontal visual field of the patient's eyes, the patient first stares at the third indicator light 207 and keeps his eyes still. At this time, the third indicator light 207 is in the off state, and the second indicator light 203 is turned on. Then the medical staff manually turns the third hand wheel 802, and the rotation of the third hand wheel 802 drives the two second T-shaped bars 201 to move away from each other. During this process, the patient keeps his eyes on the third indicator light 207. When the patient's peripheral vision on both sides of the horizontal plane cannot observe the light of the second indicator light 203, the patient immediately tells the medical staff, and the medical staff immediately stops turning the third hand wheel 802, and then reads the data on the second scale 204 indicated by the second pointer 205, which is the static horizontal visual field of the patient's eyes.

[0057] When detecting the horizontal visual field of the patient under the state of eye movement, the patient's eyes first turn left and then right. This process protects the eyes from being horizontal. The medical staff simultaneously turns the third hand wheel 802 to move the second indicator lights 203 on both sides away from each other. When the patient looks horizontally to the left and right and no light of the second indicator light 203 is observed, the medical staff is informed to stop turning the third hand wheel 802. The data on the second scale 204 is read as the horizontal visual field of the patient under the state of eye movement.

[0058] When the vertical visual field of the patient's eyes is tested in a static state, the patient stares at the third indicator light 207, keeps the eyes still, turns on the two first indicator lights 105, and then the patient manually turns the handle 408. The handle 408 rotates through the transmission of the pulley 404 and the belt 405 to drive the rotating rod 402 to rotate. The rotating rod 402 rotates through the transmission of the first bevel gear 400 and the second bevel gear 403 to drive the first threaded rod 302 to rotate. The rotation of the first threaded rod 302 drives the moving bar 303 to move, thereby pushing the first moving column 306 to move. The movement of the first moving column 306 drives the first piston 30 7 pushes the air in the second sleeve 305, so that the air enters the third sleeve 310 through the connecting tube 308, and then pushes the second piston 311 to move. The movement of the second piston 311 drives the second movable column 312 to move, and finally the two fixed rods 313 move away from each other. The fixed rods 313 move away from each other, so that the two first T-shaped bars 103 move away from each other. When the patient cannot observe the lights of the two first indicator lights 105 with the peripheral vision of the upper and lower eyes, the handle 408 is stopped. At this time, the medical staff reads the data on the first scale 106 corresponding to the first pointer 107, which is the vertical visual field of the patient's eyes in a static state.

[0059] When testing the vertical visual field of the patient under the eye movement state, the patient's eyes turn upwards, and at the same time, the patient's hand turns the handle 408, so that the two first T-shaped bars 103 continue to move away from each other. When the patient cannot observe the light of the first indicator light 105, the rotation stops, and the data on the first scale 106 at this time is the vertical visual field of the patient under the eye movement state. After the test is completed, the medical staff rotates the second hand wheel 606 in the opposite direction to move the C-shaped frame 602 upward. At this time, the spring 706 pulls the arc plate 703 to reset, so that the patient's head is unfixed.

[0060] According to the above working process, it can be known that: by setting the bidirectional threaded rod 801 and the second indicator light 203, the horizontal field of view of the patient's eyes in a static or moving state can be detected, and by setting the first indicator light 105, the first threaded rod 302, the first movable column 306, the first piston 307, the second sleeve 305, the third sleeve 310 and the second piston 311, the vertical field of view of the patient's eyes in a static or moving state can be detected, so that the horizontal and vertical field of view of the patient's eyes in a static or moving state can be tested, which improves the practicability of the device and can check the different field of view of different people.

[0061] The curved plate 703 and the breathable cloth strip 704 enable the patient's head to be fixed, thereby facilitating visual field examination of the patient.

[0062] By providing the third outer cover 206 and the third indicator light 207, the patient's eye field can be in a fixed state, thereby facilitating the detection of the horizontal and vertical field of view of the patient's eyes in a static state.

[0063] As a further solution of the present invention, two second threaded rods 500 are movably connected to one side of the top surface of the U-shaped plate 100, a bottom groove 501 is opened on the bottom surface of the L-shaped plate 300, the second threaded rod 500 is movably connected to the top surface of the inner wall of the bottom groove 501, a first gear 502 is fixed to the bottom of the outer wall of the second threaded rod 500, a rotating shaft 503 is fixed to one side of the bottom surface of the U-shaped plate 100, a second gear 504 is fixed on the outer wall of the rotating shaft 503 near the top position, the first gear 502 is meshed with the second gear 504, and a first hand wheel 505 is fixed to the bottom of the outer wall of the rotating shaft 503.

[0064] By providing the first gear 502 and the second gear 504 , the two second threaded rods 500 can rotate synchronously in the same direction, thereby driving the L-shaped plate 300 to move.

[0065] As a further solution of the present invention, a C-shaped frame 600 is fixed to the top surface of the U-shaped plate 100 on one side away from the vertical plate 101, and two locking rods 700 are movably connected to the inner side walls of the C-shaped frame 600 on one side close to each other, and a mounting rod 701 is fixed to one end of two adjacent locking rods 700, a cross bar 702 is fixed to the middle of one side of the mounting rod 701, and an arc-shaped plate 703 is fixed to the other end of two adjacent locking rods 700, and a plurality of breathable cloth strips 704 are fixed to one side of the arc-shaped plate 703.

[0066] The arc plate 703 is provided so that both sides of the patient's head can be pushed and fixed, and the breathable cloth strip 704 is provided so that the arc plate 703 can protect the patient's head when clamping both sides of the patient's head.

[0067] As a further solution of the present invention, two adjacent engaging rods 700 are respectively fixed with a stabilizing plate 705 on one side away from each other, a spring 706 is fixed on one side of the stabilizing plate 705, and one end of the spring 706 is fixed to the inner wall of the C-shaped frame 600.

[0068] By providing the spring 706, when the fixation of the patient's head needs to be cancelled, after the C-shaped frame 602 is moved upward, the stretched spring 706 can pull the locking rod 700 to move and reset, so that the fixation of the patient's head is cancelled.

[0069] As a further solution of the present invention, limiting rods 601 are respectively fixed on the tops of the two opposite side surfaces of the outer side wall of the C-shaped frame 600, and a C-shaped frame 602 is movably engaged inside the two limiting rods 601. A triangular frame 603 is fixed to the bottom end of the C-shaped frame 602, and the triangular frame 603 cooperates with the cross bar 702. A fixed column 604 is fixed to the middle of the top surface of the C-shaped frame 600, and a third threaded rod 605 is movably connected to the top surface of the fixed column 604. The third threaded rod 605 is movably connected to the top surface of the C-shaped frame 602, and a second hand wheel 606 is fixed to the top surface of the third threaded rod 605. A supporting arc plate 608 is fixed to the top surface of the U-shaped plate 100 away from the vertical plate 101, and a protective pad 609 is fixed to the top surface of the support arc plate 608. A top opening 607 is opened on the top surface of the U-shaped plate 100 away from the vertical plate 101.

[0070] The third threaded rod 605 is provided so that when the third threaded rod 605 rotates, it can drive the C-shaped frame 602 to move downward, thereby causing the triangular frame 603 to push the cross bar 702 to move, driving the arc plates 703 on both sides to move closer to each other, thereby fixing the patient's head.

[0071] As a further solution of the present invention, a first scale 106 is fixed on one side of the first guide rail 102, and the numerical range of the first scale 106 is 0 in the middle, and the data increases successively on the upper and lower sides; a second scale 204 is fixed on one side of the second guide rail 200, and the two second scales 204 on both sides are close to each other and the side is 0, and the data increases successively on both sides; a first pointer 107 is fixed on one side of the first T-bar 103, and the first pointer 107 corresponds to the first scale 106; a second pointer 205 is fixed on one side of the second T-bar 201, and the second pointer 205 corresponds to the second scale 204.

[0072] By setting the first pointer 107 and the first scale 106, the upper and lower range data of the eyes can be read, and by setting the second pointer 205 and the second scale 204, the left and right range data of the eyes can be read.

[0073] As a further solution of the present invention, two first fixed blocks 401 are fixed to a side of the L-shaped plate 300 away from the vertical plate 101, and a rotating rod 402 is movably connected between the two first fixed blocks 401 close to each other on a side, a second bevel gear 403 is fixed to one end of the rotating rod 402, a first bevel gear 400 is fixed to one end of the first threaded rod 302, the first bevel gear 400 is meshed with the second bevel gear 403, a fixed plate 407 is fixed to the top surface of the L-shaped plate 300, a rotating shaft 406 is movably connected to one side of the fixed plate 407, pulleys 404 are respectively fixed to the outer side wall of the rotating shaft 406 and one side of the outer side wall of the rotating rod 402, a belt 405 is movably connected between the two pulleys 404, and a handle 408 is fixed to one end of the rotating shaft 406.

[0074] By providing the first bevel gear 400 and the second bevel gear 403 , when the handle 408 is rotated, the rotation rod 402 can be driven to rotate through the transmission of the pulley 404 and the belt 405 , and then the first threaded rod 302 can be driven to rotate through the transmission of the first bevel gear 400 and the second bevel gear 403 .

[0075] As a further solution of the present invention, two second fixed blocks 800 are fixed to the horizontal middle part of one side of the vertical plate 101 away from the C-shaped frame 600, and a two-way threaded rod 801 is movably connected between the two second fixed blocks 800 close to each other on one side, and a third hand wheel 802 is fixed to one end of the two-way threaded rod 801. The outer wall of the vertical plate 101 has opposite sides provided with locking grooves 900, and the inner wall of the U-shaped plate 100 has locking blocks 901 fixed to each other on one side, and the locking blocks 901 are correspondingly and movably engaged in the locking grooves 900.

[0076] By providing the bidirectional threaded rod 801, the two second T-shaped bars 201 can be moved closer to or farther away from each other, thereby facilitating side viewing of the left and right visual fields of the patient's eyes.

[0077] In summary: when testing the patient's visual field, first take a stool and place it on one side of the U-shaped plate 100, then the patient sits on the stool, puts the head into the C-shaped frame 600, and places the chin on the protective pad 609. At this time, the patient's neck is located in the top opening 607, and then the medical staff manually rotates the second hand wheel 606, and the rotation of the second hand wheel 606 drives the third threaded rod 605 to rotate, and the rotation of the third threaded rod 605 drives the C-shaped frame 602 to move downward, and the downward movement of the C-shaped frame 602 drives the two triangular frames 603 to move downward, and then pushes the cross bar 702 to move, and finally makes the two arc plates 703 approach each other, clamping and fixing both sides of the patient's head, and the breathable cloth strip 704 protects both sides of the patient's head. At this time, the spring 706 is stretched, and then the third indicator is opened. Light 207, the patient keeps his eyes level and gazes to see whether he can fully observe the light of the third indicator light 207. When the light of the third indicator light 207 is not observed or cannot be fully observed, the medical staff manually turns the first hand wheel 505, and the rotation of the first hand wheel 505 drives the rotating shaft 503 to rotate, and the rotation of the rotating shaft 503 drives the second gear 504 to rotate, and the rotation of the second gear 504 drives the two first gears 502 to rotate, thereby making the two second threaded rods 500 rotate synchronously. The medical staff adjusts the height of the vertical plate 101 until the patient can fully observe the light of the third indicator light 207. At this time, the third indicator light 207 and the patient's eyes are on the same plane, and then turns off the third indicator light 207.

[0078] When testing the static horizontal visual field of the patient's eyes, the patient first stares at the third indicator light 207 and keeps his eyes still. At this time, the third indicator light 207 is in the off state, and the second indicator light 203 is turned on. Then the medical staff manually turns the third hand wheel 802, and the rotation of the third hand wheel 802 drives the two second T-shaped bars 201 to move away from each other. During this process, the patient keeps his eyes on the third indicator light 207. When the patient's peripheral vision on both sides of the horizontal plane cannot observe the light of the second indicator light 203, the patient immediately tells the medical staff, and the medical staff immediately stops turning the third hand wheel 802, and then reads the data on the second scale 204 indicated by the second pointer 205, which is the static horizontal visual field of the patient's eyes.

[0079] When detecting the horizontal visual field of the patient under the state of eye movement, the patient's eyes first turn left and then right. This process protects the eyes from being horizontal. The medical staff simultaneously turns the third hand wheel 802 to move the second indicator lights 203 on both sides away from each other. When the patient looks horizontally to the left and right and no light of the second indicator light 203 is observed, the medical staff is informed to stop turning the third hand wheel 802. The data on the second scale 204 is read as the horizontal visual field of the patient under the state of eye movement.

[0080] When the vertical visual field of the patient's eyes is tested in a static state, the patient stares at the third indicator light 207, keeps the eyes still, turns on the two first indicator lights 105, and then the patient manually turns the handle 408. The handle 408 rotates through the transmission of the pulley 404 and the belt 405 to drive the rotating rod 402 to rotate. The rotating rod 402 rotates through the transmission of the first bevel gear 400 and the second bevel gear 403 to drive the first threaded rod 302 to rotate. The rotation of the first threaded rod 302 drives the moving bar 303 to move, thereby pushing the first moving column 306 to move. The movement of the first moving column 306 drives the first piston 30 7 pushes the air in the second sleeve 305, so that the air enters the third sleeve 310 through the connecting tube 308, and then pushes the second piston 311 to move. The movement of the second piston 311 drives the second movable column 312 to move, and finally the two fixed rods 313 move away from each other. The fixed rods 313 move away from each other, so that the two first T-shaped bars 103 move away from each other. When the patient cannot observe the lights of the two first indicator lights 105 with the peripheral vision of the upper and lower eyes, the handle 408 is stopped. At this time, the medical staff reads the data on the first scale 106 corresponding to the first pointer 107, which is the vertical visual field of the patient's eyes in a static state.

[0081] When testing the vertical visual field of the patient under the eye movement state, the patient's eyes turn upwards, and at the same time, the patient's hand turns the handle 408, so that the two first T-shaped bars 103 continue to move away from each other. When the patient cannot observe the light of the first indicator light 105, the rotation stops, and the data on the first scale 106 at this time is the vertical visual field of the patient under the eye movement state. After the test is completed, the medical staff rotates the second hand wheel 606 in the opposite direction to move the C-shaped frame 602 upward. At this time, the spring 706 pulls the arc plate 703 to reset, so that the patient's head is unfixed.

[0082] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable ophthalmic visual field testing device, comprising a U-shaped plate (100), characterized in that: A vertical plate (101) is arranged on one side of the U-shaped plate (100); a first opening (208) is provided at a vertical position in the middle of one side of the vertical plate (101); second openings (209) are respectively provided on both sides at a horizontal position in the middle of one side of the vertical plate (101); a first guide rail (102) is fixed at a vertical position in the middle of one side of the vertical plate (101); second guide rails (200) are respectively fixed on both sides at a horizontal position in the middle of one side of the vertical plate (101); the first guide rail (102) corresponds to the first opening (208); two second guide rails (200) correspond to the corresponding second openings (209); two first T-shaped guide rails (102) are movably engaged with each other; A first outer cover (104) is fixed to one end of the first T-shaped bar (103), a first indicator light (105) is fixed to a side surface of an inner wall of the first outer cover (104), the other end of the first T-shaped bar (103) passes through the first opening (208), a second T-shaped bar (201) is movably engaged in the second guide rail (200), a second outer cover (202) is fixed to one end of the second T-shaped bar (201), a second indicator light (203) is fixed to a side surface of an inner wall of the second outer cover (202), the other end of the second T-shaped bar (201) passes through the corresponding second opening (209), a third outer cover (206) is fixed to the middle of a side surface of the first guide rail (102), the third outer cover (206) 6) A third indicator light (207) is fixed to one side of the inner wall, a fixing rod (313) is fixed to one side of the two first T-shaped bars (103) away from each other, an L-shaped plate (300) is arranged on one side of the top surface of the U-shaped plate (100), one side of the L-shaped plate (300) is fixed to one side of the vertical plate (101), a sleeve (304) is fixed to one side of the L-shaped plate (300), a connecting strip (309) is fixed to one end of the sleeve (304), a third sleeve (310) is fixed to one top and one bottom of one side of the connecting strip (309), a second piston (311) is movably engaged in the third sleeve (310), and a second piston (311) is fixed to one side of the second piston (311) away from the connecting strip (309). A movable column (312), one end of the second movable column (312) is fixed to the fixed rod (313), a driving assembly is arranged on one side of the top surface of the L-shaped plate (300), and the driving assembly comprises a first sleeve (301), a first threaded rod (302) is movably connected between two opposite sides of the inner wall of the first sleeve (301), a movable bar (303) is movably engaged in the first sleeve (301), and the movable bar (303) is movably connected to the outer wall of the first threaded rod (302), a second sleeve (305) is fixed to the inner wall of the sleeve shell (304), a first piston (307) is movably engaged in the second sleeve (305), and a first movable column (306) is fixed to one side of the first piston (307),The first movable column (306) movably passes through the second sleeve (305), one end of the first movable column (306) is fixed to a side surface of the movable bar (303), the top surface and the bottom surface of one side of the second sleeve (305) are respectively connected with connecting tubes (308), one end of the connecting tube (308) is connected with the outer wall of the third sleeve (310), one side of the top surface of the U-shaped plate (100) is movably connected with two second threaded rods (500), the bottom surface of the L-shaped plate (300) is provided with a bottom groove (501), the second threaded rod (500) is movably connected to the top surface of the inner wall of the bottom groove (501), A first gear (502) is fixed to the bottom of the outer wall of the second threaded rod (500), a rotating shaft (503) is fixed to one side of the bottom surface of the U-shaped plate (100), a second gear (504) is fixed to the outer wall of the rotating shaft (503) near the top, the first gear (502) is meshed with the second gear (504), a first hand wheel (505) is fixed to the bottom of the outer wall of the rotating shaft (503), two first fixed blocks (401) are fixed to the side of the L-shaped plate (300) away from the vertical plate (101), and a rotating rod (405) is movably connected between the two first fixed blocks (401) and the sides close to each other. 02), a second bevel gear (403) is fixed to one end of the rotating rod (402), a first bevel gear (400) is fixed to one end of the first threaded rod (302), the first bevel gear (400) is meshed with the second bevel gear (403), a fixed plate (407) is fixed to the top surface of the L-shaped plate (300), a rotating shaft (406) is movably connected to one side of the fixed plate (407), a pulley (404) is fixed to the outer side wall of the rotating shaft (406) and one side of the outer side wall of the rotating rod (402), a belt (405) is movably connected between the two pulleys (404), and the rotating shaft (406) ) is fixed with a handle (408) at one end, two second fixing blocks (800) are fixed at the horizontal middle part of a side of the vertical plate (101) away from the C-shaped frame (600), and a bidirectional threaded rod (801) is movably connected between the two second fixing blocks (800) close to each other on one side, and a third hand wheel (802) is fixed at one end of the bidirectional threaded rod (801), and the outer side wall of the vertical plate (101) is respectively provided with a snap-fit ​​groove (900) on the opposite sides, and the inner side wall of the U-shaped plate (100) is respectively fixed with a snap-fit ​​block (901) close to each other on one side, and the snap-fit ​​block (901) is correspondingly and movably snap-fitted in the snap-fit ​​groove (900).

2. The adjustable ophthalmic visual field testing device according to claim 1, characterized in that: A C-shaped frame (600) is fixed to the top surface of the U-shaped plate (100) at a side away from the vertical plate (101); two engaging rods (700) are movably connected to the inner side walls of the C-shaped frame (600) at a side close to each other; a mounting rod (701) is fixed to one end of two adjacent engaging rods (700); a cross bar (702) is fixed to the middle of one side of the mounting rod (701); an arc-shaped plate (703) is fixed to the other end of two adjacent engaging rods (700); and a plurality of breathable cloth strips (704) are fixed to one side of the arc-shaped plate (703).

3. The adjustable ophthalmic visual field testing device according to claim 2, characterized in that: A stabilizing plate (705) is fixed to two adjacent engaging rods (700) on one side away from each other, and a spring (706) is fixed to one side of the stabilizing plate (705), and one end of the spring (706) is fixed to the inner wall of the C-shaped frame (600).

4. The adjustable ophthalmic visual field testing device according to claim 3, characterized in that: The tops of the two opposite side surfaces of the outer wall of the C-shaped frame (600) are respectively fixed with limiting rods (601), and a C-shaped frame (602) is movably engaged inside the two limiting rods (601). A triangular frame (603) is fixed to the bottom end of the C-shaped frame (602), and the triangular frame (603) cooperates with the cross bar (702). A fixing column (604) is fixed to the middle of the top surface of the C-shaped frame (600), and the top surface of the fixing column (604) is movably connected to a third threaded rod (604). 05), the third threaded rod (605) is movably connected to the top surface of the C-shaped frame (602), a second hand wheel (606) is fixed to the top surface of the third threaded rod (605), a supporting arc plate (608) is fixed to the top surface of the U-shaped plate (100) away from the vertical plate (101), a protective pad (609) is fixed to the top surface of the supporting arc plate (608), and a top opening (607) is opened on the top surface of the U-shaped plate (100) away from the vertical plate (101).

5. The adjustable ophthalmic visual field testing device according to claim 4, characterized in that: A first scale (106) is fixed on one side of the first guide rail (102), a second scale (204) is fixed on one side of the second guide rail (200), a first pointer (107) is fixed on one side of the first T-shaped bar (103), the first pointer (107) corresponds to the first scale (106), and a second pointer (205) is fixed on one side of the second T-shaped bar (201), the second pointer (205) corresponds to the second scale (204).

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