Ophthalmic lens for observing the fundus of the eye
US4728183A · kind A · utility
42Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1986 |
| Grant date | Mar 1, 1988 |
| Priority date | — |
| Expiry date | Oct 1, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/125
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ophthalmic lens utilized for observing the fundus of an eye using through the lens illumination and for delivering a focused laser beam to the fundus includes a contact lens and an aspheric entry lens. In combination, the lenses provide an aerial image of the fundus anterior to the entry lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.