CN111929897B - VR equipment for ciliary muscle exercise - Google Patents
VR equipment for ciliary muscle exercise Download PDFInfo
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- CN111929897B CN111929897B CN202010727418.8A CN202010727418A CN111929897B CN 111929897 B CN111929897 B CN 111929897B CN 202010727418 A CN202010727418 A CN 202010727418A CN 111929897 B CN111929897 B CN 111929897B
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- 210000003205 muscle Anatomy 0.000 title claims abstract description 17
- 230000001886 ciliary effect Effects 0.000 title claims abstract description 15
- 230000033001 locomotion Effects 0.000 claims abstract description 50
- 238000004590 computer program Methods 0.000 claims abstract description 15
- 230000014759 maintenance of location Effects 0.000 claims abstract description 4
- 208000001491 myopia Diseases 0.000 claims description 19
- 230000004379 myopia Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 14
- 239000000428 dust Substances 0.000 claims 6
- 230000002265 prevention Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 15
- 230000000007 visual effect Effects 0.000 abstract description 7
- 238000012549 training Methods 0.000 abstract description 3
- 210000000695 crystalline len Anatomy 0.000 description 62
- 210000001508 eye Anatomy 0.000 description 14
- 230000004438 eyesight Effects 0.000 description 7
- 210000001525 retina Anatomy 0.000 description 7
- 230000036770 blood supply Effects 0.000 description 4
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 229960003638 dopamine Drugs 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 210000003786 sclera Anatomy 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 238000002645 vision therapy Methods 0.000 description 2
- 230000002350 accommodative effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 210000004240 ciliary body Anatomy 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H5/00—Exercisers for the eyes
- A61H5/005—Exercisers for training the stereoscopic view
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/0601—Apparatus for use inside the body
- A61N5/0603—Apparatus for use inside the body for treatment of body cavities
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/067—Radiation therapy using light using laser light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
The application discloses VR equipment for ciliary muscle exercise, the equipment comprises a motor, a screen, a convex lens, a sliding rail, a main control panel and an equipment main body; the main control board includes a computer program configured to be executed by the main control board, the main control board implementing the following steps when executing the computer program: acquiring user information; according to the user information, selecting a plurality of sub-motion ranges required by screen motion from the screen motion ranges and matching the retention time of the VR screen in each sub-motion range; and controlling the screen to move in the selected continuous multi-section sub-motion range, and staying for the matched staying time in each section of sub-motion range. According to the invention, the screen motion range is divided into the multi-segment sub-motion range, so that the change of the object distance and the image distance in each segment is closer to a linear relation, the visual distance is more easily adapted to the change caused by screen motion, and the visual training effect is improved.
Description
Technical Field
The application relates to the technical field of virtual reality, in particular to VR equipment for ciliary muscle exercise.
Background
Myopia is generally caused by overuse of the eye, resulting in loss of activity of the eye muscles and reduced accommodative performance of the eye. When an eye looks at a near object for a long time, the ciliary body can press the crystalline lens for a long time, so that the shape of the crystalline lens is bent, and the crystalline lens can be irreversibly changed after being pressed for a long time. That is, the eye looks near to far, primarily by the ciliary muscle stretching or compressing the lens, i.e., changing the lens diopter. It is theorized that vision can be restored by viewing something far away for a long period of time, with the ciliary muscle stretching the lens. With the rise of Virtual Reality (VR) devices, various types of VR glasses are popular products in the field of consumer electronics. The structures of these VR glasses are generally the imaging mode of "lens + screen", and the lens is in front of the eyes of the user, and the screen is at a certain distance from the lens, so that the user can see the virtual object in the picture imaged by the screen. And how to achieve myopia treatment by VR is a major problem.
In the existing VR equipment, myopia treatment is mainly performed by setting the moving speed of screen movement according to the vision condition of a user, wherein the screen always keeps moving at a constant speed in the screen movement process. The VR equipment also adjusts the distance between the lenses and the display screen to be appropriate according to the vision of the user to improve the myopia treatment effect.
The distance between the lens and the display screen is set to the clear watching degree, myopia treatment is realized by combining screen uniform motion, the visual distance in the myopia treatment process of the existing VR equipment is single in movement, the change relation between the object distance and the image distance is ignored, and a user is difficult to adapt to the continuous motion of the screen, so that eye muscles cannot be exercised, and the final myopia treatment effect is general.
Disclosure of Invention
The utility model aims at solving at least one of technical problem that exists among the prior art, provide a VR equipment for ciliary muscle is taken exercise, carry out scientific and effective division to the screen motion range in the equipment to stay a certain time in every section sub-motion range, thereby improve the vision correction effect.
The purpose of the invention can be realized by the following technical scheme:
a VR device for ciliary muscle exercise, the device comprising a motor, a screen, a convex lens, a main control board, a slide rail, and a device body;
the convex lens is mounted on the equipment main body, a slide rail is arranged in the VR equipment main body, the slide rail extends towards the direction far away from the convex lens along the direction close to the convex lens, and the screen is connected with the motor through the slide rail;
the motor is used for driving the screen to move towards or away from the position of the convex lens along the sliding rail; the screen movement range is a movable range of the screen on the sliding rail;
the main control board is installed in the device main body and comprises a computer program configured to be executed by the main control board, and the main control board realizes the following steps when executing the computer program:
acquiring user information;
according to the user information, selecting a plurality of sub-motion ranges required by screen motion from the screen motion ranges and matching the retention time of the VR screen in each sub-motion range;
and controlling the screen to move in the selected continuous multi-section sub-motion range, and staying for the matched staying time in each section of sub-motion range.
Further, VR equipment includes the laser emission subassembly, the laser emission subassembly includes laser switch and laser diode, laser switch controls through the main control board for control laser diode switching. The laser emission assembly is arranged on one side, facing the equipment body, of the convex lens and located between the equipment body and the convex lens, and the optical center of a laser diode in the laser emission assembly is opposite to the optical center of the mirror surface of the convex lens.
Preferably, the laser diode uses red light with a wavelength of 650 nm.
Further, the screen moves within the selected continuous multi-segment sub-movement range, specifically:
and controlling the screen to reciprocate in the selected continuous multi-segment sub-motion range.
Still further, the VR device further includes a position sensor; the position sensor is arranged in the equipment main body and used for detecting the position of the screen in real time;
and in the screen movement process, when the screen reaches any one end of the selected continuous multi-section sub-range, the main control board receives signals sent by the position sensors so as to control the motor to drive the screen to change the direction.
Further, VR equipment still includes dustproof mechanism, dustproof mechanism includes dust-proof box and dustproof rubber, the dust-proof box sets up at VR equipment housing, the lens circle that convex lens has been inlayed to dustproof rubber parcel.
Further, the farther the sub-range of motion is from the convex lens, the smaller its corresponding length.
Compared with the prior art, the invention has the following beneficial effects:
1. by dividing the screen motion range into a plurality of sub-motion ranges and staying in each sub-motion range for a certain time, the sight distance is more easily adapted to the change caused by the screen motion, and the visual training effect is improved.
2. According to different vision conditions of users, the continuous multi-section sub-motion range required by screen motion is different from the retention time of the screen in each section of sub-motion range, so that different users can better adapt to the change of screen motion, and the visual training effect is improved.
3. The blood supply of the eyes can be promoted by adopting laser irradiation, and the myopia treatment effect is improved. The red light with the wavelength of 650nm has better effect of promoting blood supply. And the convex lens is adopted, and the optical center of the laser diode is opposite to the optical center of the convex lens, so that the laser can be accurately irradiated on the retina, and the myopia treatment effect is improved.
4. The screen is controlled to move repeatedly, so that ciliary muscles can stretch continuously, and the myopia treatment effect is improved.
Drawings
The present application is further described with reference to the following figures and examples;
fig. 1 is a schematic diagram of a VR device for ciliary muscle exercise in an embodiment of the present invention.
Fig. 2 is a schematic diagram of a partial structure of a VR device for ciliary muscle exercise in an embodiment of the invention.
Fig. 3 is a schematic diagram of a convex lens optic of a VR device for ciliary muscle exercise in an embodiment of the invention.
Fig. 4 is a flowchart of a computer program executed by a main control board in a VR device for ciliary muscle exercise according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present embodiments of the present application, preferred embodiments of which are illustrated in the accompanying drawings, which are for the purpose of visually supplementing the description with figures and detailed description, so as to enable a person skilled in the art to visually and visually understand each and every feature and technical solution of the present application, but not to limit the scope of the present application.
As shown in fig. 1 to 3, a preferred embodiment of the present invention provides a VR device for ciliary muscle exercise, which includes a motor 1, a screen 2, a convex lens, a main control board 4, a slide rail 5, and a device main body 7;
the convex lens is arranged in the equipment main body, the slide rail is connected with the VR equipment main body, two slide rails are provided, the slide rail extends along the direction close to the convex lens to the direction far away from the convex lens and is in a strip shape, and the screen is connected with the motor through the slide rail;
the motor is used for driving the screen to move towards or away from the convex lens along the slide rail; the screen motion range is a movable range of the screen on the sliding rail;
the main control board is installed in the device main body and includes a computer program configured to be executed by the main control board, referring to fig. 4, when the main control board executes the computer program, the following steps are implemented:
s1, acquiring user information;
s2, according to the user information, selecting a plurality of sub-motion ranges required by screen motion from the screen motion ranges and matching the staying time of the VR screen in each sub-motion range;
and S3, controlling the screen to move in the selected continuous multi-section sub-motion range, and staying for the matched staying time in each section of sub-motion range.
When the main control board implements the step S1 when executing the computer program, the specific steps are:
the movement range of the screen in the VR device is from 0 point to the end point, the whole range is 20mm, the 0 point is the position closest to the convex lens in the screen movement process, the end point is the position farthest from the convex lens in the screen movement process, and the movement range of the VR screen is divided into a multi-segment sub-movement range. In addition, the longer the distance from the sub-motion range to the convex lens is, the smaller the corresponding length of the sub-motion range is, so that the change of the object distance and the image distance in the screen motion process is closer to a linear relation, the process of gradual change of the visual distance is fully simulated, and the myopia treatment effect is improved.
Therefore, in the present embodiment, the screen motion range is divided into 6 sub-motion ranges, which are: the first section of the motion range is 0-6 mm, the second section of the motion range is 6-12 mm, the third section of the motion range is 12-16 mm, the fourth section of the motion range is 16-18 mm, the fifth section of the motion range is 18-19 mm, and the sixth section of the motion range is 19-20 mm. The above is the best mode for simulating the gradual change effect of the visual range through practice verification.
When the main control board implements the step S2 when executing the computer program, the specific steps are:
the user passes through mobile terminal APP input user information, mobile terminal APP passes through the bluetooth with VR equipment and is connected. In this embodiment, the user adopts mobile terminal APP based on android system, when initializing for the first time, with name, gender, height, birthday, myopia diopter, left eye correction eyesight and right eye correction eyesight input to among the mobile terminal APP, accomplish user registration to save above-mentioned user information in mobile terminal, this moment this user is registered user, can simplify user information acquisition process.
After the initial initialization, the user only needs to directly log in the mobile terminal APP based on the android system, and the corresponding user information can be obtained. When a user needs to modify the user information, the user information is directly modified in the APP, and the modified and updated user information replaces the user information stored in the mobile terminal before modification.
When the main control board implements step S3 when executing the computer program, the specific steps are:
the sub-movement range required by the screen movement and the stay time of the VR screen in each sub-movement range are different according to different diopters of users, because the diopters of the users are different, the positions of the objects imaged in the retinas of the users are different, and the time required by the users to see the objects at the same distance is different, so the distance and the stay time of the objects are required to be controlled in the treatment process,
in this embodiment, the sub-movement range of the screen movement selected according to the difference of the user's near vision diopter and the movement time matching rule in each sub-movement range are as shown in table 1:
TABLE 1
In addition, the motor in this embodiment adopts a stepping motor with the precision of 0.02 mm/step, and while realizing stepless speed regulation, the staying time of the VR screen in the sub-motion range selected by each segment under different diopter conditions can be obtained according to the running time of each segment and the screen motion speed (the motor rotation speed).
When the main control panel executes the computer program to realize the step S4, the screen moves in the selected continuous multi-segment sub-motion range, specifically:
the control screen reciprocates in the selected continuous multi-section sub-motion range, namely the control screen moves from one end, close to the convex lens, of the sub-motion range closest to the convex lens to one end, far away from the convex lens, of the sub-motion range farthest from the convex lens, and then moves from one end, far away from the convex lens, of the sub-motion range farthest from the convex lens to one end, close to the convex lens, of the sub-motion range closest to the convex lens, and the control screen repeatedly moves.
And the VR device further comprises a position sensor 8; the position sensors are arranged at the shells corresponding to the positions of the two ends of the sliding rail and are used for detecting the position of the screen in real time;
in the process of screen movement, when the screen reaches any end of the selected continuous multi-section sub-range, namely when the screen reaches one end, close to the convex lens, of the sub-movement range closest to the convex lens or one end, far away from the convex lens, of the sub-movement range farthest from the convex lens, the main control board receives signals sent by the position sensor so as to control the motor to drive the screen to change the direction.
In the present embodiment, the sub-movement range of the screen movement selected according to the difference of the user's near vision diopter and the movement time matching rule at each sub-movement range are as shown in table 1 described above.
In addition, the screen can stay in each sub-motion range for a set stay time in each sub-motion range.
In one possible embodiment, the screen stops at the midpoint of each segment of the sub-range of motion. In the 6 sub-motion ranges divided by the embodiment, the stop point of the screen in the first sub-motion range is 3mm, the stop point of the screen in the second sub-motion range is 9mm, the stop point of the screen in the third sub-motion range is 14mm, the stop point of the screen in the fourth sub-motion range is 17mm, the stop point of the screen in the fifth sub-motion range is 18.5mm, and the stop point of the screen in the sixth sub-motion range is 19.5mm.
In one possible embodiment, the screen stops at the end of each segment of the sub-range of motion that is remote from the convex lens. In the 6-segment sub-motion range divided by the embodiment, the stop point of the screen in the first segment sub-motion range is 6mm, the stop point of the screen in the second segment sub-motion range is 12mm, the stop point of the screen in the third segment sub-motion range is 16mm, the stop point of the screen in the fourth segment sub-motion range is 18mm, the stop point of the screen in the fifth segment sub-motion range is 19mm, and the stop point of the screen in the sixth segment sub-motion range is 20mm. In the embodiment, the main control panel controls the motor to drive the screen to stay for a set time and then controls the motor to commutate.
In this embodiment, the VR device includes a laser emitting assembly 6, the laser emitting assembly includes a laser switch and a laser diode, the laser switch is controlled by a main control board for controlling the laser diode to be switched on and off. The laser emission assembly is arranged on one side, facing the equipment body, of the convex lens and located between the equipment body and the convex lens, and the optical center of a laser diode in the laser emission assembly is opposite to the optical center of the mirror surface of the convex lens. The laser diode emits red light with a wavelength of 650 nm. The laser irradiation should be performed before the screen is moved. The laser irradiation can promote blood circulation of the veins of the eyes, improve blood supply of the retina and the sclera and improve the myopia treatment effect of the vision training content. In addition, red light with the wavelength of 650nm can increase the dopamine content in retina and inhibit the increase of the axis of eyes caused by myopia.
In this embodiment, convex lens can adjust the position to adaptation user interpupillary distance, and laser emission subassembly and convex lens an organic whole are located on the movable plate, therefore the laser emission subassembly can remove together when convex lens is removed, there are two limiting plates at every convex lens lower extreme on the movable plate, make through the limiting plate, laser diode's in the laser emission subassembly optical center is just to convex lens's optical center, and laser emission subassembly and convex lens an organic whole locate on the movable plate can make convex lens remove when laser emission subassembly can remove together, thereby make the optical center of two laser shock tubes of laser aim at convex lens's optical center all the time, can't shine the retina when avoiding convex lens to remove. In addition, the laser emission assembly is connected with the moving plate through the connecting rod, the connecting rod is the same as the radius of the convex lens in length, and the laser emission assembly can rotate by taking one end, connected with the moving plate, of the connecting rod as a circle center, so that the laser emission assembly can be hidden when not needed to be used, and the optical center, aligned to the convex lens, of the laser diode can be accurately adjusted back when the laser emission assembly is needed to be used. The laser diode adopts red light with the wavelength of 650 nm. The laser irradiation can promote blood circulation of the veins of the eyes, improve blood supply of the retina and the sclera, and improve the myopia treatment effect of the vision training content. In addition, red light with the wavelength of 650nm can increase the dopamine content in retina and inhibit the increase of the axis of eyes caused by myopia.
In this embodiment, the VR device further includes a dustproof mechanism, the dustproof mechanism includes a dustproof box 9 and dustproof rubber 10, the dustproof box is disposed on the VR device housing, and the dustproof rubber covers the lens ring embedded with the convex lens.
The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by a computer program, which may be stored in a computer readable storage medium and executed by a computer to implement the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Claims (5)
1. A VR device for ciliary muscle exercise, the device comprising a motor, a screen, a convex lens, a main control panel, a slide rail, and a device body;
the convex lens is installed on the equipment main body, a slide rail is arranged in the VR equipment main body, the slide rail extends towards the direction far away from the convex lens along the direction close to the convex lens, and the screen is connected with the motor through the slide rail;
the motor is used for driving the screen to move towards or away from the position of the convex lens along the sliding rail; the screen motion range is a movable range of the screen on the sliding rail; the screen motion range is divided into 6 segments of sub-motion ranges, which are respectively as follows: the first section of the sub-movement range is 0-6 mm, the second section of the sub-movement range is 6-12 mm, the third section of the sub-movement range is 12-16 mm, the fourth section of the sub-movement range is 16-18 mm, the fifth section of the sub-movement range is 18-19 mm, and the sixth section of the sub-movement range is 19-20 mm;
the main control board is installed in the device main body and comprises a computer program configured to be executed by the main control board, and the main control board realizes the following steps when executing the computer program:
acquiring user information, wherein the user information comprises myopia diopters;
according to the user information, selecting a plurality of sub-motion ranges required by screen motion from the screen motion ranges and matching the retention time of the VR screen in each sub-motion range;
controlling the screen to move in the selected continuous multi-section sub-motion range, and staying for a matched staying time in each section of sub-motion range;
the VR equipment comprises a laser emission assembly, the laser emission assembly comprises a laser switch and a laser diode, and the laser switch is controlled by a main control board and is used for controlling the laser diode to be switched on and switched off;
the laser emission assembly is arranged on one side, facing the equipment main body, of the convex lens and is positioned between the equipment main body and the convex lens, and the optical center of a laser diode in the laser emission assembly is over against the optical center of the mirror surface of the convex lens;
the laser emission assembly and the convex lenses are integrally arranged on the movable plate, two limiting plates are arranged at the lower end of each convex lens on the movable plate, the laser emission assembly is connected with the movable plate through a connecting rod, and the laser emission assembly rotates by taking one end, connected with the movable plate, of the connecting rod as a circle center;
the longer the distance from the sub-motion range to the convex lens is, the smaller the corresponding length is, so that the object distance and the image distance change in the screen motion process are closer to a linear relation.
2. The VR device of claim 1, wherein the laser diode employs a wavelength of 650nm red light.
3. The VR device of claim 1, wherein said main control board, when executing said computer program, performs the steps of moving said screen within the selected sub-range of motion of consecutive segments, specifically:
and controlling the screen to reciprocate in the selected continuous multi-section sub-motion range.
4. The VR device of claim 3, further comprising position sensors mounted in the device body at positions corresponding to the ends of the sliding track for detecting screen positions in real time;
and in the process of screen movement, when the screen reaches any one end of the selected continuous multi-section sub-range, the main control panel receives signals sent by the position sensor so as to control the motor to drive the screen to change direction.
5. The VR device of claim 1, further comprising a dust prevention mechanism, the dust prevention mechanism comprising a dust box and a dust rubber, the dust box disposed at a VR device housing, the dust rubber encasing the lens ring embedded with the convex lens.
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| SG11201902806YA (en) * | 2016-09-30 | 2019-05-30 | Edenlux Corp | Vision improving device |
| CN208371777U (en) * | 2017-12-01 | 2019-01-15 | 重庆贝奥新视野医疗设备有限公司 | Automatic compensation switching mechanism and imaging system and tonometer |
| CN109288657A (en) * | 2018-08-07 | 2019-02-01 | 北京目瞳科技有限公司 | Human eye amblyopia training equipment |
| CN109288656A (en) * | 2018-08-07 | 2019-02-01 | 北京目瞳科技有限公司 | Eyeball myopia trains equipment |
| CN109288658A (en) * | 2018-08-31 | 2019-02-01 | 北京目瞳科技有限公司 | A kind of VR glasses and visual training method for realizing visual training |
| CN109847193A (en) * | 2019-01-08 | 2019-06-07 | 广东朝阳电子科技股份有限公司 | Portable visual acuity protective device |
| CN211050739U (en) * | 2019-02-21 | 2020-07-21 | 沈国宝 | Head-wearing type vision health-care device |
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|---|---|
| CN111929897A (en) | 2020-11-13 |
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