BEST CORRECTED VISUAL ACUITY CHARACTERISTICS MEASURING...

Details BEST CORRECTED VISUAL ACUITY CHARACTERISTICS MEASURING... BEST CORRECTED VISUAL ACUITY CHARACTERISTICS MEASURING...

2005-03-01

2005-03-01

Manuel, George (Department: 3762)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

Reexamination Certificate

active

06860603

ABSTRACT:
A device comprises a refraction correcting part700for correcting refraction of an eye400to be examined of a subject; an adjusting state measuring part800for measuring whether a target observed by the eye400through the refraction correcting part700is in the adjustable range of the eye; and corrective value correcting means360for correcting a corrective value for the refraction correcting part700so that said eye can achieve best correction based on a result of measurement by the adjusting state measuring part800, and is configured to measure visual acuity characteristics of the eye400at a corrective value for the refraction correcting part700to achieve best correction of the eye400according to responses of the subject about displayed targets.

REFERENCES:
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patent: 5523809 (1996-06-01), Kohayakawa
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patent: 2 129 963 (1984-05-01), None
patent: 2002-17672 (2002-01-01), None
Hiroshi Uozato, “Photorefraction Methods and Their History”,Atarashii Ganka(New Ophthalmology), vol. 7, No. 6, 1990, pp. 823-833.

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