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US Patent 7344247 Ocular accommodative function examination apparatus

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Patent
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Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7344247
Date of Patent
March 18, 2008
Patent Application Number
10901162
Date Filed
July 29, 2004
Patent Primary Examiner
‌
Huy K. Mai
Patent abstract

An ocular accommodative function examination apparatus for examining an accommodative function of an examinee's eye, includes: a fixation target presenting optical system which presents a fixation target at a presenting position to the eye, the presenting position being changeable in a direction of a visual axis of the eye; a refractive power measuring optical system which measures refractive power of the eye; an analysis part which acquires variation or fluctuation in the refractive power of the eye gazing at the fixation target at a certain presenting position within a predetermined time based on a result of measurement by the measuring optical system, and determines tho accommodative function of the eye based on the acquired variation or fluctuation; a display part which displays a result determined by the analysis part; and a control part which controls presenting of the fixation target to perform at least one of simple examination for determining the accommodative function with respect to a first presenting position and thorough examination for determining the accommodative function with respect to a second presenting position, the second presenting position including different positions more than the first presenting position.

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