US Patent 7357508 Eye test chart apparatus
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Patent Inventor Names
Taketoshi Suzuki0
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Patent abstract
An eye test chart includes a visual target for multiple test purposes composed of patterns of combinations of at lest two or more kinds of colors and predetermined shapes that are arranged at predetermined positions on an image area corresponding to visual field regions to be examined. Color vision defects and their abnormal regions can be identified as a result of a subject's visual identification of the visual targets arranged at the predetermined positions.
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US Patent 07357508 Eye test chart apparatus US Patent 7357508 Eye test chart apparatus
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Patent Number
073575080
Patent Number
73575080
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Patent Jurisdiction
Patent Number
073575080
Date of Patent
April 15, 2008
0Patent Application Number
104877840
Date Filed
August 23, 2002
0Official Website
Patent Primary Examiner
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US Patent 07357508 Eye test chart apparatus
Infobox
Is a
Patent jurisdiction
Patent number
07357508
Date of patent
April 15, 2008
Patent application number
10487784
Date Filed
August 23, 2002
Patent primary examiner
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