Optometry apparatus

Details Optometry apparatus Optometry apparatus

2005-05-24

2008-12-02

Martinez, Joseph (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

C351S223000

Reexamination Certificate

active

07458686

ABSTRACT:
Provided is an optometry apparatus capable of checking details of input operation performed by a person to be examined to smoothly perform an examination. The optometry apparatus includes: an optical head portion having a liquid crystal display device for indicating an index such as a Landolt ring to the left eye of the person to be examined; an optical head portion having a liquid crystal display device for indicating an index to the right eye of the person to be examined; a joystick lever for inputting a reply to the indices indicated by the liquid crystal display devices, which is operated by the person to be examined; and a control portion that causes the liquid crystal display devices to display operational detail information indicating operational details of the joystick lever operated by the person to be examined in addition to the indices.

REFERENCES:
patent: 5825460 (1998-10-01), Kohayakawa
patent: 6045227 (2000-04-01), Stewart et al.
patent: 2004/0105073 (2004-06-01), Maddalena et al.
patent: 7-43651 (1995-02-01), None
patent: 2002-119471 (2002-04-01), None
patent: 2002-119476 (2002-04-01), None
Ophthalmologic Examination Method Handbook (Third Edition), Maruo, Koguchi, et al. al, Igaku-Shoin, 1999, pp. 11 and 12.

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