Ophthalmic apparatus for photographing an anterior part of an ey

Details Ophthalmic apparatus for photographing an anterior part of an ey Ophthalmic apparatus for photographing an anterior part of an ey

1999-01-29

2000-06-13

Manuel, George

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

A61B 310

Patent

active

060740639

ABSTRACT:
An ophthalmic apparatus for photographing an anterior part of an eye to be examined, the apparatus comprising a sectional image photographing optical system for photographing a sectional image of the anterior part of the eye, a rotating device for rotating the sectional image photographing optical system, a retroillumination image photographing optical system for photographing a retroillumination image of the anterior part of the eye, a determining device for obtaining a rotation angle that the sectional image photographing optical system is to be rotated by the rotating device based on the retroillumination image photographed by the retroillumination photographing optical system and a controlling device for controlling operation of the rotating device based on the rotation angle obtained by the determining device.

REFERENCES:
patent: 4711540 (1987-12-01), Yoshino et al.
patent: 4711541 (1987-12-01), Yoshino et al.
patent: 5202708 (1993-04-01), Sasaki et al.
patent: 5309186 (1994-05-01), Mizuno
patent: 5512965 (1996-04-01), Snook
patent: 5713047 (1998-01-01), Kohayakawa
patent: 5757462 (1998-05-01), Nanjo
patent: 5864382 (1999-01-01), Soya et al.
patent: 5886768 (1999-04-01), Knopp et al.
Official European Search Report dated May 4, 1999 (2 pages).

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