Title:
Fundus photographic technique to determine eye refraction for optic disc size calculations
Document Type and Number:
WIPO Patent Application WO2001058343
Kind Code:
A3
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.
Inventors:
QUIGLEY MICHAEL (CA)
Application Number:
PCT/CA2001/000142
Publication Date:
April 25, 2002
Filing Date:
February 08, 2001
Export Citation:
Assignee:
QUIGLEY MICHAEL (CA)
International Classes:
A61B3/12; (IPC1-7): A61B3/12; A61B3/14
Foreign References:
| US4265518A | 1981-05-05 | |||
| US5871439A | 1999-02-16 | |||
| US5830147A | 1998-11-03 | |||
| US5867249A | 1999-02-02 | |||
| US5250966A | 1993-10-05 | |||
| US4331132A | 1982-05-25 | |||
| US5446509A | 1995-08-29 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 8, no. 213 (E - 269)<1650> 28 September 1984 (1984-09-28)
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