Fundus photographic technique to determine eye refraction for optic disc size calculations
US6854846B2 · kind B2 · utility
4Cited by
8References
14Claims
0Family size
Inventor
Key dates
| Filing date | Feb 8, 2001 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | May 9, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The determination of magnification in an ophthalmic fundus camera image is achieved by detecting the focusing mechanism position, and using a calibration function to calculate the magnification from the focus position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.