CN108937841B - Ophthalmologic visual field inspection apparatus - Google Patents
Ophthalmologic visual field inspection apparatus Download PDFInfo
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- CN108937841B CN108937841B CN201810784614.1A CN201810784614A CN108937841B CN 108937841 B CN108937841 B CN 108937841B CN 201810784614 A CN201810784614 A CN 201810784614A CN 108937841 B CN108937841 B CN 108937841B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
- A61B3/0041—Operational features thereof characterised by display arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0083—Apparatus for testing the eyes; Instruments for examining the eyes provided with means for patient positioning
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- Eye Examination Apparatus (AREA)
Abstract
The invention discloses an ophthalmological visual field inspection device, which comprises a perimeter and a computer, wherein the computer comprises a host and a display, and the perimeter is in communication connection with the host; the support table comprises a lifting support and a support plate arranged at the top of the lifting support, and the perimeter is placed on the support plate; the lifting support comprises at least three telescopic rods distributed in a triangular shape, each telescopic rod consists of an outer sleeve rod and an inner sleeve rod coaxially extending into the outer sleeve rod and capable of moving along the axial direction of the outer sleeve rod, the top of each inner sleeve rod is connected with the bottom of the support plate, and the lower ends of the outer sleeve rods are connected through transverse plates; the center of the bottom of the support plate is vertically connected with a jacking rod, the bottom of the jacking rod is connected with a lifter, and the bottom of the lifting support is provided with a foot switch for controlling the lifter; the invention can conveniently adjust the height of the perimeter, thereby being suitable for patients with different heights, reducing the burden of the patients, being beneficial to keeping the body balance of the patients and preventing the reduction of the inspection accuracy due to the movement of the head.
Description
Technical Field
The invention relates to a medical instrument, in particular to an ophthalmologic visual field inspection device.
Background
Visual field examination plays a crucial role in the diagnosis and treatment of ophthalmic diseases. Visual field examination provides important information for ophthalmologists to diagnose and track follow-up for major blinding eye diseases. Needless to say, visual field examination is the basic method for diagnosing and monitoring glaucoma and other visual and optic nerve diseases. Advanced visual field examination offers the possibility of early diagnosis and close monitoring of the progression of these diseases, while allowing for successful treatment.
The visual field is the peripheral spatial region that is seen when the eyeball is immobilized forward. Mariotte in the 17 th century discovered the relationship of the optic nerve head to physiological blind spots and thus became the first person to describe special dark spots. ThomasYang actually measured the visual field for the first time in 1801. In the middle of the 19 th century, Forster designed the first arcuate perimeter that extended the visual field examination to 450 and measured the outside world of the visual field. Bjerrum (1889) invented a Tangent view screen and a dynamic multi-equal sight perimeter.
In the 20 th century, Ferree and Rand developed Forster's early work, expanding the scope of inspection of the arc perimeter. Arc perimeter has been used until now. Beginning in 1950, the projected hemispherical perimeter designed by Goldmann has continued to be popular for 30 years. Goldmann perimetry standardizes the background illumination, the size of the stimulation cursor and its brightness for dynamic and venous perimetry examinations and at the same time it lays the foundation for the development of more accurate modern perimetry. Thereafter, louissloan first recognized the importance of a static threshold type perimeter. Harms and Aulhorn provide a supplementary visual inspection of the dynamic perimeter. They designed the Tubinger manual perimeter, which can complete both dynamic and static perimetry examination. Armaly proposed the concept of super-threshold screening, and he proposed sites of vulnerable visual fields in glaucoma. In the 60's of the 20 th century, Dubois-Poulsen and Magis first attempted to invent an automatic dynamic perimeter, but was hindered by technical problems. Lynn and Tate utilized a computer and television in 1969, showing for the first time the first automatic static perimeter. Automatic static perimeter meters have since been developed and continuously improved.
The existing visual field examination device for ophthalmology generally comprises a visual field meter and a computer which are independently arranged, wherein the visual field meter is in communication connection with a host of the computer, the operation of the visual field meter is controlled by the host, and the host can obtain an accurate result after calculating detection data, so that a scientific basis is provided for diagnosis of ophthalmology and neurology diseases such as glaucoma, fundus diseases, optic nerve injury and the like. When a hospital is arranged, the perimeter is generally placed on a table top, so that the height of the perimeter cannot be adjusted, a patient can only actively adjust the body posture of the patient to enable the head of the patient to adapt to the height of the perimeter, the burden of the patient is increased, the head of the patient often moves due to unbalance of the body, the vision cannot be always kept fixed in the examination process, the head moves to drive the eyeball to move, the visual field deviates, and the deviation (possibly enhanced and possibly weakened) of the light threshold of the detection position occurs.
Therefore, in order to solve the above problems, there is a need for a visual field inspection apparatus for ophthalmology, which can conveniently adjust the height of a perimeter, thereby accommodating patients of different heights, reducing the burden on the patients, and facilitating to keep the balance of the body of the patients, preventing the accuracy of the inspection from being lowered due to the movement of the head.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an ophthalmologic visual field inspection apparatus, which can adjust the height of a perimeter easily to accommodate patients of different heights, reduce the burden on the patient, maintain the balance of the patient's body, and prevent the accuracy of the inspection from being lowered due to the movement of the head.
The invention discloses an ophthalmologic visual field inspection device, which comprises a perimeter and a computer, wherein the computer comprises a host and a display, and the perimeter is in communication connection with the host; the support table comprises a lifting support and a support plate arranged at the top of the lifting support, and the perimeter is placed on the support plate; the lifting support comprises at least three telescopic rods distributed in a triangular shape, each telescopic rod consists of an outer sleeve rod and an inner sleeve rod coaxially extending into the outer sleeve rod and capable of moving along the axial direction of the outer sleeve rod, the top of each inner sleeve rod is connected with the bottom of the support plate, and the lower end of each outer sleeve rod is connected through a transverse plate; the bottom center of the support plate is vertically connected with a jacking rod, the bottom of the jacking rod is connected with the lifter, and the bottom of the lifting support is provided with a foot switch for controlling the lifter.
As a further improvement of the technical scheme, the pedal switch is respectively provided with an ascending pedal and a descending pedal and is respectively arranged at the two sides of the bottom of the lifting bracket.
As a further improvement to the technical scheme, the lifter is a lead screw lifter, an air cylinder or a hydraulic cylinder.
As a further improvement of the above technical solution, the perimeter is provided with a lower jaw support for placing the lower jaw of the subject and a forehead support for abutting against the forehead of the subject, the perimeter is further provided with a head clamp for fixing the head of the subject, and the head clamp is arranged on the left and right sides of the lower jaw support and the forehead support.
As a further improvement to the above technical solution, the head clamp includes clamp bodies symmetrically fixed on the left and right sides of the perimeter, the longitudinal section of the clamp body is arc-shaped, and the inner surface of the clamp body is covered with a flexible pad; the bottom of clamp articulates on a slide bar, the lower extreme swing joint of slide bar is on the pole socket, the pole socket is equipped with and is used for installing the slide bar and supplies the slide bar to follow the horizontal direction horizontal slide rail that slides from side to side, just be equipped with the elastic component that is used for producing elastic restoring force inwards to the slide bar in the horizontal slide rail.
As a further improvement to the technical scheme, the lower jaw support comprises two support bodies I which are arranged in parallel, wherein the support bodies I are in a concave arc shape; the support body I is fixed on a support seat, the support seat is connected with a vertical driver and is driven by the vertical driver to vertically lift, the vertical driver is arranged in the instrument main body, and a control button for controlling the vertical driver is arranged on the support table.
As a further improvement to the technical scheme, the forehead support comprises two support bodies II which are arranged in parallel, and the support bodies II are in an inwards concave arc shape.
As a further improvement to the above technical solution, the computer further comprises a fixing base for supporting the display; the display screen is arranged on the front side of the display, the fixing seat comprises a base and a supporting rod vertically arranged on the base, the top surface of the supporting rod extends upwards to form an extension rod, the rod diameter of the extension rod is smaller than that of the supporting rod, a bearing is sleeved outside the extension rod, a turntable is sleeved outside the bearing, and an L-shaped rod used for being connected with the display is fixedly connected to the outer side surface of the turntable; the rear side of the display is provided with a slot matched with the L-shaped rod, and the L-shaped rod is inserted from the slot and connected with the display.
As a further improvement to the above technical scheme, the device further comprises a limiting block, wherein a concave containing cavity is arranged in the middle of the bottom surface of the limiting block, and the extension rod coaxially extends into the containing cavity and can axially move; limiting rods which are uniformly distributed in the circumferential direction are further arranged on the four sides of the accommodating cavity on the bottom surface of the limiting block, and limiting pore channels which are in one-to-one correspondence with the limiting rods and used for inserting the limiting rods are arranged in the rotary disc.
As a further improvement to the above technical scheme, the limiting rod is provided with a marble, and an arc-shaped groove adapted to the marble is arranged in the limiting pore channel; and a pressure spring is arranged between the top of the limiting rod and the closed end of the containing cavity.
Through the disclosure, the invention has the following beneficial technical effects:
according to the visual field inspection device for ophthalmology, the perimeter is placed on the support table, and when the lifter is controlled to be started through the pedal switch, the supporting plate is lifted or lowered through the lifting rod, so that the height of the perimeter can be conveniently adjusted, the visual field inspection device is suitable for patients with different heights, the burden of the patients is relieved, the body balance of the patients is favorably kept, and the inspection accuracy is effectively prevented from being reduced due to the movement of the head of the patient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the perimeter of the present invention;
fig. 3 is a schematic view of the connection between the display and the fixing base of the perimeter of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific examples.
As shown in fig. 1 to 3: the ophthalmologic visual field inspection device comprises a perimeter 1 and a computer, wherein the computer comprises a host machine 2 and a display 3, and the perimeter 1 is in communication connection with the host machine 2; the support platform comprises a lifting support and a support plate 4 arranged at the top of the lifting support, and the perimeter 1 is placed on the support plate 4; the lifting support comprises at least three telescopic rods distributed in a triangular shape, each telescopic rod consists of an outer sleeve rod 51 and an inner sleeve rod 52 coaxially extending into the outer sleeve rod 51 and capable of moving along the axial direction of the outer sleeve rod 51, the top of each inner sleeve rod 52 is connected with the bottom of the support plate 4, and the lower end of each outer sleeve rod 51 is connected through a transverse plate 53; the center of the bottom of the support plate 4 is vertically connected with a lifting rod 54, the bottom of the lifting rod 54 is connected with a lifter 55, and the bottom of the lifting support is provided with a foot switch for controlling the lifter 55; the computer can be an existing PC computer; the display 3 is placed on a computer desk; the support plate 4 can be rectangular, and four telescopic rods can be arranged at the moment and are respectively positioned at four corners of the support plate 4; the perimeter 1 is placed on a support table, when the lifter 55 is controlled to start by a foot switch, the jacking rod 54 lifts or lowers the support plate 4, so that the height of the perimeter 1 can be conveniently adjusted, the perimeter is suitable for patients with different heights, the burden of the patients is relieved, the body balance of the patients is favorably kept, and the reduction of the inspection accuracy caused by the movement of the head is effectively prevented; the pedal switch is respectively provided with an ascending pedal 61 and a descending pedal 62 and is respectively arranged at the two sides of the bottom of the lifting bracket; when the lifting pedal 61 is stepped on, the supporting plate 4 is lifted by the lifting rod 54 under the action of the lifter 55; the descending pedal 62 is stepped down, and the supporting plate 4 is pulled down by the jacking rod 54 under the action of the lifter 55; the lifter 55 may be a screw lifter, an air cylinder or a hydraulic cylinder, and may use commercial power as a power source.
In this embodiment, the perimeter 1 is provided with a chin rest 12 for placing the chin of the subject and a forehead rest 13 for abutting against the forehead of the subject, the perimeter 1 is further provided with a head clamp for fixing the head of the subject, and the head clamp is arranged on the left side and the right side of the chin rest 12 and the forehead rest 13; the left and the right take the direction in the figure 2 as the standard; the number of the head clamps can be set according to the requirement, the fixing effect is enhanced when the number is increased, in the embodiment, the number of the head clamps is at least two; owing to add the headclamp on perimeter 1, place its chin in chin support 12 and hold in the palm 13 back with its forehead butt at the forehead at the examinee, bind the examinee's head through the headclamp to can effectively fix the examinee's head, make the examinee keep looking firmly in the inspection process, avoid the field of vision to take place the skew, guarantee the accuracy of inspection result.
In this embodiment, the head clamp includes clamp bodies 14 symmetrically fixed on the left and right sides of the perimeter 1, the longitudinal section of the clamp body 14 is arc-shaped, and the inner surface thereof is covered with a flexible pad 14 a; the bottom end of the clamp body 14 is hinged to a sliding rod 17, the lower end of the sliding rod 17 is movably connected to a rod seat 18, the rod seat 18 is provided with a horizontal sliding rail used for mounting the sliding rod 17 and allowing the sliding rod 17 to slide left and right along the horizontal direction, and an elastic piece 19 used for generating inward elastic restoring force for the sliding rod 17 is arranged in the horizontal sliding rail; the clamp bodies 14 are symmetrically arranged and clamp and fix the head of the examinee from two sides; the clamp body 14 is arc-shaped, and the radian of the clamp body is adapted to the head of a human body so as to improve the clamping fixation degree; the medial side faces one side of the subject's head, when in use; the flexible pad 14a may be, for example, a sponge material, to improve comfort when held stationary; the clamp body 14 is hinged with the sliding rod 17, so that the clamp body can rotate with a single degree of freedom to improve the adaptability in use; the slide bar 17 drives the clamp bodies 14 to move on the bar seat 18, so that the distance between the two clamp bodies 14 is adjusted, the clamp can be suitable for fixing examinees with different head sizes, and the universality is strong; the elastic member 19 can be, for example, a tension spring, and the two clamp bodies 14 can clamp the head of the human body located in the middle under the action of the elastic member.
In this embodiment, the lower jaw support 12 includes two support bodies i 121 arranged in parallel, and the support bodies i 121 are in a concave arc shape; the two support bodies I121 are arranged, so that the supporting position of the lower jaw can be quickly adjusted according to the requirement; at this time, the forehead support 13 also comprises two support bodies ii 131 arranged in parallel, the support bodies ii 131 correspond to the support bodies i 121, and the support bodies ii 131 are in an inwards concave arc shape; the upper surface of the support body I121 and the outer surface of the support body II can be provided with a flexible cushion 14a layer so as to improve the comfort level of the support.
In this embodiment, the bracket i 121 is fixed on a bracket 122, the bracket 122 is connected to a vertical driver 15 and is driven by the vertical driver 15 to perform vertical lifting movement, and the vertical driver 15 is arranged inside the perimeter 1; the height of the lower jaw support 12 can be adjusted through the vertical driver 15, so that the device is suitable for examinees with different head sizes, and the universality of the device is improved; meanwhile, the support table 4 is provided with a control button 16 for controlling the vertical driver 15, and the vertical driver 15 can be controlled through the control button 16, so that the inspection is convenient.
In this embodiment, the computer further includes a fixing base for supporting the display 3; the front side of the display 3 is provided with a display screen 303, the fixing base 302 comprises a base 304 and a supporting rod 305 vertically arranged on the base 304, the top surface of the supporting rod 305 extends upwards to form an extension rod 306, the rod diameter of the extension rod 306 is smaller than that of the supporting rod 305, a bearing 307 is sleeved outside the extension rod 306, a turntable 308 is sleeved outside the bearing 307, and the outer side surface of the turntable 308 is fixedly connected with an L-shaped rod 309 used for being connected with the display 3; the struts 305 are arranged perpendicular to the horizontal plane, preferably in a round bar configuration; extension rod 306 may have a diameter of 1/3 of strut 305; the bearing 307 is a cylindrical rolling bearing; the monitor 3 is connected to the rotary table 308 through an "L" shaped rod 309, and the rotary table 308 can be rotated by using the axis of the extension rod 306 as a rotation axis, so that the monitor 3 can be rotated left and right to adjust the position as required.
In this embodiment, the rear side of the display 3 is provided with an insertion slot 312 adapted to the "L" -shaped rod 309, and the "L" -shaped rod 309 is inserted from the insertion slot 312 and connected to the display 3; by adopting the structure, the display 3 is convenient to be connected with the fixed seat 302, and the disassembly is convenient; the bottom of the base 304 is provided with a counterweight 313 for increasing the self weight; by adopting the structure, the stability of the base 304 is improved; the counterweight 313 may be, for example, a solid iron block.
In this embodiment, the device further comprises a limiting block 314, wherein a concave cavity 15 is arranged in the middle of the bottom surface of the limiting block 314, and the extension rod 306 coaxially extends into the cavity 315 and can axially move; limiting rods 316 which are uniformly distributed in the circumferential direction are further arranged on the bottom surface of the limiting block 314 and positioned on the four sides of the cavity 315, and limiting hole channels 317 which are corresponding to the limiting rods 316 one by one and used for inserting the limiting rods 316 are arranged in the turntable 308; the number of the limiting rods 316 can be 4-8; the extension rod 306 is inserted into the cavity 315 to position and guide the limit block 314; after the limiting rod 316 is inserted into the limiting hole channel 317, the position of the turntable 308 is fixed, so that the position of the display 3 is limited; when the turntable 308 needs to be rotated, the limiting rod 316 is pulled out upwards, and the adjustment is convenient and reliable.
In this embodiment, the limiting rod 316 is provided with a marble 318, and the limiting hole 317 is provided with an arc-shaped groove 319 adapted to the marble 318; the marble 318 is partially arranged in the limiting rod 316, in the process that the limiting rod 316 is gradually inserted into the limiting hole channel 317, the marble 318 is extruded by the inner wall of the limiting hole channel 317 and is contracted into the limiting rod 316 along the radial direction, after the limiting rod 316 moves in place, the marble 318 extends out and is arranged in the arc-shaped groove 319, so that the limiting action is formed on the limiting rod 316, and at the moment, the limiting rod 316 can be pulled out only by large upward pulling force; in addition, a pressure spring 320 is arranged between the top of the limiting rod 316 and the closed end of the containing cavity 315, so that the resetting effect of the limiting rod 316 during pulling out can be improved.
Finally, the principle and embodiments of the present invention are explained by using specific examples, and the above descriptions of the examples are only used to help understand the core idea of the present invention, and the present invention can be modified and modified without departing from the principle of the present invention, and the modified and modified examples also fall into the protection scope of the present invention.
Claims (7)
1. An ophthalmologic visual field inspection device comprises a perimeter and a computer, wherein the computer comprises a host and a display, and the perimeter is in communication connection with the host; the method is characterized in that: the support table comprises a lifting support and a support plate arranged at the top of the lifting support, and the perimeter is placed on the support plate; the lifting support comprises at least three telescopic rods distributed in a triangular shape, each telescopic rod consists of an outer sleeve rod and an inner sleeve rod coaxially extending into the outer sleeve rod and capable of moving along the axial direction of the outer sleeve rod, the top of each inner sleeve rod is connected with the bottom of the support plate, and the lower end of each outer sleeve rod is connected through a transverse plate; the center of the bottom of the support plate is vertically connected with a jacking rod, the bottom of the jacking rod is connected with a lifter, and the bottom of the lifting support is provided with a foot switch for controlling the lifter;
the computer also comprises a fixed seat for supporting the display; the display screen is arranged on the front side of the display, the fixing seat comprises a base and a supporting rod vertically arranged on the base, the top surface of the supporting rod extends upwards to form an extension rod, the rod diameter of the extension rod is smaller than that of the supporting rod, a bearing is sleeved outside the extension rod, a turntable is sleeved outside the bearing, and an L-shaped rod used for being connected with the display is fixedly connected to the outer side surface of the turntable; the rear side of the display is provided with a slot matched with the L-shaped rod, and the L-shaped rod is inserted from the slot and connected with the display; the middle part of the bottom surface of the limiting block is provided with an inwards concave containing cavity, and the extension rod coaxially extends into the containing cavity and can axially move; limiting rods which are uniformly distributed in the circumferential direction are further arranged on the bottom surface of the limiting block and positioned on the four sides of the accommodating cavity, and limiting pore channels which are in one-to-one correspondence with the limiting rods and used for inserting the common limiting rods are arranged in the rotary table; the limiting rod is provided with a marble, and an arc-shaped groove matched with the marble is formed in the limiting pore channel; and a pressure spring is arranged between the top of the limiting rod and the closed end of the containing cavity.
2. An ophthalmic visual field inspection device according to claim 1, characterized in that: the pedal switch is respectively provided with an ascending pedal and a descending pedal and is respectively arranged at the two sides of the bottom of the lifting bracket.
3. An ophthalmic visual field inspection device according to claim 2, characterized in that: the lifter is a screw lifter, an air cylinder or a hydraulic cylinder.
4. An ophthalmic visual field inspection device according to any one of claims 1 to 3, wherein: the visual field meter is provided with a lower jaw support for placing the lower jaw of the examinee and a forehead support for abutting against the forehead of the examinee, the visual field meter is further provided with a head clamp for fixing the head of the examinee, and the head clamp is arranged on the left side and the right side of the lower jaw support and the forehead support.
5. An ophthalmic visual field inspection device according to claim 4, wherein: the head clamp comprises clamp bodies symmetrically fixed on the left side and the right side of the perimeter, the longitudinal section of each clamp body is arc-shaped, and the inner side surface of each clamp body is covered with a flexible pad; the bottom of clamp articulates on a slide bar, the lower extreme swing joint of slide bar is on the pole socket, the pole socket is equipped with and is used for installing the slide bar and supplies the slide bar to follow the horizontal direction horizontal slide rail that slides from side to side, just be equipped with the elastic component that is used for producing elastic restoring force inwards to the slide bar in the horizontal slide rail.
6. An ophthalmic visual field inspection device according to claim 5, wherein: the lower jaw support comprises two support bodies I which are arranged in parallel, and the support bodies I are in a concave arc shape; the support body I is fixed on a support seat, the support seat is connected with a vertical driver and is driven by the vertical driver to vertically lift, the vertical driver is arranged in the instrument main body, and a control button for controlling the vertical driver is arranged on the support table.
7. An ophthalmic visual field inspection device according to claim 6, wherein: the forehead support comprises two support bodies II arranged in parallel, and the support bodies II are in an inwards concave arc shape.
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CN201810784614.1A CN108937841B (en) | 2018-07-17 | 2018-07-17 | Ophthalmologic visual field inspection apparatus |
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CN201810784614.1A CN108937841B (en) | 2018-07-17 | 2018-07-17 | Ophthalmologic visual field inspection apparatus |
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CN108937841A CN108937841A (en) | 2018-12-07 |
CN108937841B true CN108937841B (en) | 2020-06-26 |
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CN201810784614.1A Expired - Fee Related CN108937841B (en) | 2018-07-17 | 2018-07-17 | Ophthalmologic visual field inspection apparatus |
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Families Citing this family (4)
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CN112102941A (en) * | 2020-09-11 | 2020-12-18 | 宁波市眼科医院 | Eye disease screening robot carrying on eye fundus photo screening system |
CN112842800A (en) * | 2021-01-13 | 2021-05-28 | 郭智勇 | Platform-based ophthalmic examination device |
CN112869698B (en) * | 2021-01-26 | 2022-09-20 | 潍坊医学院附属医院 | Convenient ophthalmic field of vision inspection device who adjusts |
CN114224281B (en) * | 2021-12-29 | 2022-08-05 | 深圳市中医院 | Eye visual field detection device and method |
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CN101742957A (en) * | 2007-05-16 | 2010-06-16 | 爱丁堡大学董事会 | Testing vision |
CN202501176U (en) * | 2012-03-13 | 2012-10-24 | 姚林 | Rotary stand structure of tablet personal computer |
EP2796088A1 (en) * | 2011-12-20 | 2014-10-29 | Postech Academy-Industry Foundation | Personal-computer-based visual-field self-diagnosis system and visual-field self-diagnosis method |
CN204595710U (en) * | 2015-05-22 | 2015-08-26 | 黑龙江工程学院 | Multifunction graphoscope |
CN205433902U (en) * | 2016-02-15 | 2016-08-10 | 淮安市淮安医院 | Electronic surgical instruments elevating platform |
CN107550453A (en) * | 2017-09-30 | 2018-01-09 | 林福清 | A kind of new eye examination head fixing device |
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2018
- 2018-07-17 CN CN201810784614.1A patent/CN108937841B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101742957A (en) * | 2007-05-16 | 2010-06-16 | 爱丁堡大学董事会 | Testing vision |
EP2796088A1 (en) * | 2011-12-20 | 2014-10-29 | Postech Academy-Industry Foundation | Personal-computer-based visual-field self-diagnosis system and visual-field self-diagnosis method |
CN202501176U (en) * | 2012-03-13 | 2012-10-24 | 姚林 | Rotary stand structure of tablet personal computer |
CN204595710U (en) * | 2015-05-22 | 2015-08-26 | 黑龙江工程学院 | Multifunction graphoscope |
CN205433902U (en) * | 2016-02-15 | 2016-08-10 | 淮安市淮安医院 | Electronic surgical instruments elevating platform |
CN107550453A (en) * | 2017-09-30 | 2018-01-09 | 林福清 | A kind of new eye examination head fixing device |
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