KR20230016870A - Vision training device by content image - Google Patents

Vision training device by content image Download PDF

Info

Publication number
KR20230016870A
KR20230016870A KR1020210098380A KR20210098380A KR20230016870A KR 20230016870 A KR20230016870 A KR 20230016870A KR 1020210098380 A KR1020210098380 A KR 1020210098380A KR 20210098380 A KR20210098380 A KR 20210098380A KR 20230016870 A KR20230016870 A KR 20230016870A
Authority
KR
South Korea
Prior art keywords
unit
training device
controller
content image
vision training
Prior art date
Application number
KR1020210098380A
Other languages
Korean (ko)
Other versions
KR102560412B1 (en
Inventor
정상중
김용주
Original Assignee
동서대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 동서대학교 산학협력단 filed Critical 동서대학교 산학협력단
Priority to KR1020210098380A priority Critical patent/KR102560412B1/en
Publication of KR20230016870A publication Critical patent/KR20230016870A/en
Application granted granted Critical
Publication of KR102560412B1 publication Critical patent/KR102560412B1/en

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H5/00Exercisers for the eyes
    • A61H5/005Exercisers for training the stereoscopic view
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00Constructions of non-optical parts
    • G02C5/001Constructions of non-optical parts specially adapted for particular purposes, not otherwise provided for or not fully classifiable according to technical characteristics, e.g. therapeutic glasses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16Physical interface with patient
    • A61H2201/1602Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/1604Head
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16Physical interface with patient
    • A61H2201/1602Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/165Wearable interfaces
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50Control means thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50Control means thereof
    • A61H2201/5023Interfaces to the user
    • A61H2201/5043Displays
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50Control means thereof
    • A61H2201/5097Control means thereof wireless
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H2205/00Devices for specific parts of the body
    • A61H2205/02Head
    • A61H2205/022Face
    • A61H2205/024Eyes

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Pain & Pain Management (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Rehabilitation Tools (AREA)

Abstract

The present invention relates to a vision training device using a content image, which comprises a controller, and a terminal, to relieve the fatigue of human eyes. In addition, the controller includes a content creation unit, a storage unit, a transmission unit, a reception unit, and a control unit. Moreover, the terminal is in the form of glasses. The present invention has a remarkable effect of making a user's eyesight development training interesting and useful by adjusting a content image displayed by a perforated plate and a control plate by an electric signal.

Description

컨텐츠 이미지에 의한 시력 훈련장치{Vision training device by content image}Vision training device by content image}

본발명은 컨텐츠 이미지에 의한 시력 훈련장치에 관한 것으로, 보다 상세하게는 다공판과 전기신호에 의한 조절판에 의해 나타나는 컨텐츠이미지를 조절하여 사용자의 시력개발훈련을 흥미롭고 유용하게 할 수 있는 컨텐츠 이미지에 의한 시력 훈련장치에 관한 것이다.The present invention relates to a vision training device using content images, and more particularly, by adjusting content images displayed by a perforated plate and a control plate by electric signals, which can make the user's eyesight development training interesting and useful. It is about an eye training device.

일반적으로 현대인들은 눈을 혹사하여 시력이 저하되기 쉽고, 이에 시력을 회복하거나 좋게 만들기 위한 훈련장치들이 개발되어 왔고, 종래특허기술의 일례로서 등록특허공보 등록번호 10-2017545호에는 시력훈련장치에 있어서,In general, modern people tend to deteriorate their eyesight by overusing their eyes, and thus training devices for restoring or improving eyesight have been developed. ,

사용자의 안구에 대응하는 적어도 하나의 접안공을 갖는 본체와;a main body having at least one eyepiece corresponding to a user's eyeball;

서로 다른 디옵터를 갖는 복수의 렌즈와, 상기 복수의 렌즈가 상호 간격을 두고 지지되며 상기 복수의 렌즈 중 어느 하나가 상기 접안공으로부터의 시선방향 내에 배치되도록 상기 본체에 대해 이동가능하게 설치된 렌즈지지체를 갖는 적어도 하나의 렌즈유니트와;A plurality of lenses having different diopters, and a lens support movably installed with respect to the main body so that the plurality of lenses are supported at intervals from each other and one of the plurality of lenses is disposed in a visual direction from the eyepiece hole at least one lens unit having;

상기 렌즈지지체를 이동시키는 구동모터와;a drive motor for moving the lens support;

상기 구동모터를 제어하여 상기 복수의 렌즈 중에서 선택된 테스트 렌즈가 상기 시선방향 내에 배치되도록 하며, 상기 테스트 렌즈에 대해 상기 안구가 정시안 상태로 될 때까지의 적응시간을 저장하는 제어부를 포함하는 시력훈련장치가 공개되어 있다.and a control unit for controlling the driving motor so that a test lens selected from among the plurality of lenses is disposed in the gaze direction, and storing an adaptation time until the eyeball becomes emmetropic with respect to the test lens. is disclosed.

또한, 등록특허공보 등록번호 10-2237238호에는 시력훈련장치가 공개되어 있다.In addition, Registered Patent Publication No. 10-2237238 discloses a vision training device.

그러나 상기 종래기술들은 사용이 복잡하거나 시력개선효과가 적은 단점이 있었다.However, the above conventional techniques have disadvantages in that they are complicated to use or have low visual acuity improvement effects.

따라서 본발명은 상기와 같은 문제점을 해결하고자 안출된 것으로, 다공판과 전기신호에 의한 조절판에 의해 나타나는 컨텐츠이미지를 조절하여 사용자의 시력개발훈련을 흥미롭고 유용하게 할 수 있는 시력 훈련장치를 제공하고자 하는 것이다.Therefore, the present invention has been made to solve the above problems, and it is intended to provide a vision training device that can make the user's eyesight development training interesting and useful by adjusting the content image displayed by the control plate by the perforated plate and the electric signal. will be.

본발명은 컨텐츠 이미지에 의한 시력 훈련장치에 관한 것으로, 제어기와;The present invention relates to a vision training device using content images, comprising: a controller;

단말기;로 구성되어 사람의 눈 피로도를 덜어주는 것을 특징으로 한다.It is composed of a terminal; characterized in that it relieves human eye fatigue.

또한 상기 제어기는 컨테츠 생성부, 저장부, 송신부, 수신부, 제어부로 구성되는 것을 특징으로 한다.In addition, the controller is characterized in that it is composed of a contents generator, a storage unit, a transmitter unit, a receiver unit, and a control unit.

또한, 상기 단말기는 안경형태인 것을 특징으로 한다.Also, the terminal is characterized in that it is in the form of glasses.

따라서 본발명은 다공판과 전기신호에 의한 조절판에 의해 나타나는 컨텐츠이미지를 조절하여 사용자의 시력개발훈련을 흥미롭고 유용하게 할 수 있는 현저한 효과가 있다.Therefore, the present invention has a remarkable effect of making the user's eyesight development training interesting and useful by adjusting the content image displayed by the perforated plate and the control plate by electric signals.

도 1은 본발명의 컨텐츠 이미지에 의한 시력 훈련장치 구성도
도 2는 본발명의 컨텐츠 이미지에 의한 시력 훈련장치 제어기 구성도
1 is a block diagram of a visual acuity training device using a content image according to the present invention;
2 is a block diagram of a vision training device controller according to the content image of the present invention

본발명은 컨텐츠 이미지에 의한 시력 훈련장치에 관한 것으로, 제어기와;The present invention relates to a vision training device using content images, comprising: a controller;

단말기;로 구성되어 사람의 눈 피로도를 덜어주는 것을 특징으로 한다.It is composed of a terminal; characterized in that it relieves human eye fatigue.

또한 상기 제어기는 컨테츠 생성부, 저장부, 송신부, 수신부, 제어부로 구성되는 것을 특징으로 한다.In addition, the controller is characterized in that it is composed of a contents generator, a storage unit, a transmitter unit, a receiver unit, and a control unit.

또한, 상기 단말기는 안경형태인 것을 특징으로 한다.Also, the terminal is characterized in that it is in the form of glasses.

또한, 상기 안경의 렌즈는 다수개의 구멍이 형성된 플라스틱 재질 판형태인 것을 특징으로 한다.In addition, the lens of the glasses is characterized in that the plastic material plate form is formed with a plurality of holes.

또한, 상기 판내측에는 조절판이 결합되며 상기 조절판은 제어기와 연결되어 제어기의 제어부 신호를 통해 조절판의 일부구간이 불투명색으로 변하는 것을 특징으로 한다.In addition, a control plate is coupled to the inside of the plate, and the control plate is connected to a controller so that a partial section of the control plate changes to an opaque color through a control signal of the controller.

또한, 상기 투명, 불투명은 전기신호에 의해 크기가 달라지는 것을 특징으로 한다.In addition, the transparent and opaque are characterized in that the size is changed by an electrical signal.

본발명을 첨부도면에 의해 상세히 설명하면 다음과 같다.도 1은 본발명의 컨텐츠 이미지에 의한 시력 훈련장치 구성도, 도 2는 본발명의 컨텐츠 이미지에 의한 시력 훈련장치 제어기 구성도이다.The present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a configuration diagram of the vision training device using content images according to the present invention, and FIG. 2 is a configuration diagram of a controller configuration of the vision training device using content images according to the present invention.

본발명은 시력 훈련장치에 관한 것으로, 제어기와; The present invention relates to a vision training device, comprising: a controller;

단말기;로 구성되어 사람의 시력이 좋게 훈련하며 눈 피로도를 덜어주는 것이다.It consists of a terminal; it trains people's eyesight well and relieves eye fatigue.

상기 단말기는 좌우렌즈부와 좌우 테로 구성되어 얼굴에 착용가능한 안경형태이다. 그러나 일반 안경과는 달리 상기 단말기의 렌즈는 다수개의 구멍이 형성된 다공판형태이다. 그러므로 사용자가 다공판을 통해 전방을 보면 구멍의 회절효과에 의해 시력훈련이 되며 눈피로도가 경감된다.The terminal is composed of left and right lens units and left and right frames, and is in the form of glasses that can be worn on the face. However, unlike ordinary glasses, the lens of the terminal is in the form of a perforated plate having a plurality of holes. Therefore, when the user looks forward through the perforated plate, eyesight is trained by the diffraction effect of the hole, and eye fatigue is reduced.

그리고 본발명은 상기 다공판 내측에는 조절판이 결합되며 상기 조절판은 평소에는 투명한 플라스틱 내지 금속재질이며 제어기와 연결되어 제어기의 제어부 신호를 통해 조절판의 일부구간이 불투명색으로 변하게 된다.In the present invention, a control plate is coupled to the inside of the perforated plate, and the control plate is usually made of transparent plastic or metal and is connected to a controller so that a partial section of the control plate is changed to an opaque color through a control signal of the controller.

상기 불투명색 영역은 전기신호에 의해 영역크기가 달라진다.이는 관용의 매직미러기술에 의하므로 자세한 설명은 생략한다. The size of the opaque color area is changed by an electric signal. Since this is based on the conventional magic mirror technology, a detailed description thereof will be omitted.

곧 조절판을 관용의 액체 크리스털고분자 액정판으로 구성한다. 전기를 인가하게 되면 분자 액정들이 일렬로 배치가 되면서 빛을 투과하고 투명하게 되는 기술로서 자세한 설명은 생략한다 조절판은 구역을 정하여 각기 별도로 전기신호에 의해 제어되므로, 조절판의 투명한 지점과 투명하지 않는 지점이 구분된다. 그러므로 조절판의 구명이 투명한 경우에만 전방의 다공판의 구멍들을 통하여 외부빛을 보게 되므로, 조절판이 불투명한 경우, 다공판의 구멍들 역시 보이지 않게 된다. 그러므로 다공판의 구멍들 숫자나 구멍간격을 조절할 수 있다. 조절판에 공급되는 전기를 위해 밧데리와 제어기가 별도로 테 부위에 장착되어 있다. 그리고 서버와의 통신을 위한 통신모듈이 장착될 수 있다.Soon, the control panel is composed of a liquid crystal polymer liquid crystal panel. When electricity is applied, molecular liquid crystals are arranged in a line to transmit light and become transparent. Detailed explanations are omitted. The control panel determines the area and is controlled by electric signals separately, so the transparent point and the non-transparent point of the control panel this is distinguished Therefore, only when the hole of the control plate is transparent, external light is seen through the holes of the front perforated plate, and when the control plate is opaque, the holes of the perforated plate are also invisible. Therefore, the number of holes in the perforated plate or the hole spacing can be adjusted. For electricity supplied to the control panel, the battery and controller are separately mounted on the frame. And a communication module for communication with the server may be mounted.

그리고 상기 전기가 인가되지 않은 경우의 불투명한 부분은 강아지나 나무 등의 컨텐츠 이미지로 형성할 수 있어서 단조로움을 피하고 시력훈련의 흥미를 유발할 수 있다.In addition, the opaque part when electricity is not applied can be formed as a content image such as a puppy or a tree, thereby avoiding monotony and arousing interest in sight training.

상기 제어기는 상기 원형등의 형태를 만드는 컨텐츠 생성부, 데이터를 저장하는 저장부, 송신부, 수신부, 제어부로 구성된다. 난이도를 정하고 제어기의 제어부는 컨텐츠 생성부에서 생성되는 컨텐츠이미지인 불투명한 이미지의 모습과 양을 결정하여 전기를 인가하지 않게 하여 조절판에 불투명하게 나타나게 한다. 또한 상기 조절판을 두 개를 전후방으로 이격하여 설치하여 구멍들을 삼중으로 배치하여 시력훈련향상을 할 수 있다.The controller is composed of a content creation unit that creates the shape of the circular light, a storage unit that stores data, a transmission unit, a reception unit, and a control unit. After setting the level of difficulty, the control unit of the controller determines the shape and amount of the opaque image, which is the content image generated by the content creation unit, so that electricity is not applied to make it appear opaque on the control panel. In addition, it is possible to improve eyesight training by installing two control plates spaced apart from each other in the front and rear and arranging the holes in triple.

따라서 본발명은 다공판과 전기신호에 의한 조절판에 의해 나타나는 컨텐츠이미지를 조절하여 사용자의 시력개발훈련을 흥미롭고 유용하게 할 수 있는 현저한 효과가 있다.Therefore, the present invention has a remarkable effect of making the user's eyesight development training interesting and useful by adjusting the content image displayed by the perforated plate and the control plate by electric signals.

Claims (3)

제어기와;
단말기;로 구성되어 사람의 눈 피로도를 덜어주는 것을 특징으로 하는 컨텐츠 이미지에 의한 시력 훈련장치
with a controller;
A vision training device by content images, characterized in that it is composed of a terminal and relieves human eye fatigue.
제1항에 있어서, 상기 제어기는 컨텐츠 생성부, 저장부, 송신부, 수신부, 제어부로 구성되는 것을 특징으로 하는 컨텐츠 이미지에 의한 시력 훈련장치The vision training apparatus according to claim 1, wherein the controller is composed of a content creation unit, a storage unit, a transmission unit, a reception unit, and a control unit. 제2항에 있어서, 상기 단말기는 안경형태인 것을 특징으로 하는 컨텐츠 이미지에 의한 시력 훈련장치The vision training device according to claim 2, wherein the terminal is in the form of glasses.
KR1020210098380A 2021-07-27 2021-07-27 Vision training device by content image KR102560412B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020210098380A KR102560412B1 (en) 2021-07-27 2021-07-27 Vision training device by content image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020210098380A KR102560412B1 (en) 2021-07-27 2021-07-27 Vision training device by content image

Publications (2)

Publication Number Publication Date
KR20230016870A true KR20230016870A (en) 2023-02-03
KR102560412B1 KR102560412B1 (en) 2023-07-26

Family

ID=85226047

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020210098380A KR102560412B1 (en) 2021-07-27 2021-07-27 Vision training device by content image

Country Status (1)

Country Link
KR (1) KR102560412B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004008289A (en) * 2002-06-04 2004-01-15 Nikon Gijutsu Kobo:Kk Eye fatigue relaxation service system
KR20070008636A (en) * 2004-03-17 2007-01-17 스카라 가부시키가이샤 Fatigue recovery support device
JP2017534347A (en) * 2014-10-31 2017-11-24 ジョン アン,ソン Treatment of dry eye and vision enhancer
KR20190071472A (en) * 2017-12-14 2019-06-24 주식회사 디엠에스 Eyeglasses-type wearable device providing game contents for treatment of amblyopia

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004008289A (en) * 2002-06-04 2004-01-15 Nikon Gijutsu Kobo:Kk Eye fatigue relaxation service system
KR20070008636A (en) * 2004-03-17 2007-01-17 스카라 가부시키가이샤 Fatigue recovery support device
JP2017534347A (en) * 2014-10-31 2017-11-24 ジョン アン,ソン Treatment of dry eye and vision enhancer
KR20190071472A (en) * 2017-12-14 2019-06-24 주식회사 디엠에스 Eyeglasses-type wearable device providing game contents for treatment of amblyopia

Also Published As

Publication number Publication date
KR102560412B1 (en) 2023-07-26

Similar Documents

Publication Publication Date Title
US10788686B2 (en) Eye-protective shade for augmented reality smart glasses
CN103857370B (en) The visual exercise of adjustable flicker rate and test
CN106309089B (en) VR vision correction procedure and device
US11480784B2 (en) Binocular display with digital light path length modulation
CN101843539B (en) Device and method for vision correction
US8708484B2 (en) Adjustable spectral transmittance eyewear
CN107219641A (en) For controlling myopia, extension depth of focus and correcting the presbyopic positive lens design of pulse
JPH03214872A (en) Spectacle type retina direct display device
CN107870424A (en) Adjustable virtual reality device capable of adjusting display module
CN213987032U (en) Wear and show glasses interpupillary distance and diopter adjustment mechanism
GB2571167A (en) Eye exercise device
JP2020500689A (en) Vision training device for cognitive correction
CN110496019A (en) Portable visual acuity instrument for training and visual training method
KR102560412B1 (en) Vision training device by content image
CN208910890U (en) Eye health-care instrument
CN107111366A (en) The method being adapted to for the sensation output mode for making sensation output device with user
CN212817088U (en) Eyeball lens training instrument
CN215132837U (en) Vision recovery training instrument
CN211067859U (en) Vision training instrument
CN201122196Y (en) Sight protection lens
CN203507073U (en) Vision adjusting training instrument
JPH08257080A (en) Sight recovery training device
CN218045799U (en) Eye protection instrument
JPH08257078A (en) Sight recovery training device
CN114099267A (en) Eye protection instrument

Legal Events

Date Code Title Description
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant