Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1998-11-23
2000-02-29
Manuel, George
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
A61B 310
Patent
active
060300795
ABSTRACT:
A method for analyzing an image of a fundus to analyze an optic disc on the basis of the image of the fundus includes: a first step of producing a disc line and a cup line on a same planar image, on the basis of the image of the fundus; a second step of obtaining a longest distance in a predetermined direction of each of a disc region determined by the produced disc line and a cup region determined by the produced cup line; and a third step of computing a C/D ratio on the basis of longest distances of the regions in the predetermined direction.
REFERENCES:
patent: 4824238 (1989-04-01), Feldman et al.
patent: 4991584 (1991-02-01), Kobayashi et al.
patent: 5315329 (1994-05-01), McAdams
Manuel George
Nidek Co. Ltd.
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