CA2023875A1 - Ophthalmic prismatic image relocating eye glasses for persons having retinitis pigmentosa and hemianopia and method for making same - Google Patents
Ophthalmic prismatic image relocating eye glasses for persons having retinitis pigmentosa and hemianopia and method for making sameInfo
- Publication number
- CA2023875A1 CA2023875A1 CA2023875A CA2023875A CA2023875A1 CA 2023875 A1 CA2023875 A1 CA 2023875A1 CA 2023875 A CA2023875 A CA 2023875A CA 2023875 A CA2023875 A CA 2023875A CA 2023875 A1 CA2023875 A1 CA 2023875A1
- Authority
- CA
- Canada
- Prior art keywords
- retina
- eye glasses
- optical image
- field
- hemianopia
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000011521 glass Substances 0.000 title abstract 3
- 206010019452 Hemianopia Diseases 0.000 title abstract 2
- 208000007460 Hemianopsia Diseases 0.000 title abstract 2
- 208000007014 Retinitis pigmentosa Diseases 0.000 title abstract 2
- 230000003287 optical effect Effects 0.000 abstract 7
- 210000001525 retina Anatomy 0.000 abstract 4
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
A pair of rotatable optical image deflector assemblies is disclosed which are detachably mounted via an adapter bracket to a conventional eye testing apparatus. Each optical image deflector assembly has a fixed light reflecting optical element, and a pivotal reflecting optical element. The optical image deflector assembly directs light onto a peripheral area of a visually sensitive or functional area of the retina which is normal to the central field of the retina. The pivotal optical element scans a pre-set field expanding test chart and projects an image thereof to the visually sensitive or functional area of the retina. The optical image deflector assembly is usable in making prismatic eye glasses to expand the normal central field of view of a person suffering from retinitis pigmentosa or hemianopia. The prismatic eye glasses refract images from a field outside the normal central field of view within and along the peripheral edge of the visually sensitive central area of the retina for expanding the normal central field of view.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/410,119 US5155508A (en) | 1982-10-21 | 1989-09-20 | Ophthalmic prismatic image relocating eye glasses for persons having retinitis pigmentosa and hemianopia and method for making same |
| US410,119 | 1989-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2023875A1 true CA2023875A1 (en) | 1991-03-21 |
| CA2023875C CA2023875C (en) | 1995-11-21 |
Family
ID=23623307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002023875A Expired - Fee Related CA2023875C (en) | 1989-09-20 | 1990-08-23 | Ophthalmic prismatic image relocating eye glasses for persons having retinitis pigmentosa and hemianopia and method for making same |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2023875C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132672A (en) * | 2017-07-03 | 2017-09-05 | 鲁国耀 | A kind of quick assembling does not move the optical correction eyeglasses assembly of the heart and its with mirror method |
| CN115211808A (en) * | 2022-06-02 | 2022-10-21 | 泽景(西安)汽车电子有限责任公司 | Pupil distance measuring method, near-to-eye display system and computer readable storage medium |
| CN116616695A (en) * | 2023-04-07 | 2023-08-22 | 瑞尔明康(浙江)医疗科技有限公司 | Human eye optical characteristic acquisition method, large-view-field optometry device and optometry system |
-
1990
- 1990-08-23 CA CA002023875A patent/CA2023875C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132672A (en) * | 2017-07-03 | 2017-09-05 | 鲁国耀 | A kind of quick assembling does not move the optical correction eyeglasses assembly of the heart and its with mirror method |
| CN107132672B (en) * | 2017-07-03 | 2023-03-21 | 鲁国耀 | Fast-assembly non-shift optical correction glasses assembly and glasses matching method thereof |
| CN115211808A (en) * | 2022-06-02 | 2022-10-21 | 泽景(西安)汽车电子有限责任公司 | Pupil distance measuring method, near-to-eye display system and computer readable storage medium |
| CN116616695A (en) * | 2023-04-07 | 2023-08-22 | 瑞尔明康(浙江)医疗科技有限公司 | Human eye optical characteristic acquisition method, large-view-field optometry device and optometry system |
| CN116616695B (en) * | 2023-04-07 | 2024-05-14 | 瑞尔明康(浙江)医疗科技有限公司 | Human eye optical characteristic acquisition method, large-view-field optometry device and optometry system |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2023875C (en) | 1995-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |