Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1996-11-21
1998-12-01
Mai, Huy
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351209, A61B 314
Patent
active
058446583
ABSTRACT:
This specification discloses an eye fundus blood flow meter having a blood flow measuring system for measuring the blood flow of the fundus of an eye to be examined, and a malfunction detecting unit for detecting measurement malfunction occurring during the measurement by the blood flow measuring system. The specification also discloses an eye fundus tracking apparatus for tracking a predetermined position on the fundus of an eye to be examined having a tracking mechanism for tracking a predetermined position on the eye to be examined, an abnormality detecting system for detecting the operational abnormality of the tracking mechanism, and a control unit for executing predetermined control on the tracking mechanism when the operational abnormality occurs.
REFERENCES:
patent: 5098426 (1992-03-01), Sklar et al.
patent: 5640963 (1997-06-01), Tanaka
Kishida Nobuyoshi
Tamura Toshikazu
Canon Kabushiki Kaisha
Mai Huy
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