Coaxial ophthalmoscope arrangement
US4063806A · kind A · utility
1Cited by
3References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1976 |
| Grant date | Dec 20, 1977 |
| Priority date | — |
| Expiry date | Jul 19, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/156
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved coaxial ophthalmoscope incorporating both a light trap for absorbing substantially all of the light not utilized for illuminating the eye under examination, and thereby preventing the unused light from reflecting back into the eye of the viewer thus obscuring the vision thereof, and a filtering means for filtering out the light reflected from the cornea of the eye under examination but allowing the light reflected from the retina to pass therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.