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Document Number
US Patent 7320518
Issued Date
January 22, 2008
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Abstract
An ophthalmic apparatus comprising: an illuminating optical system which projects light to an examinee' eye; an image pickup unit which color-photographs an interference image caused by interference of light reflected by a tear layer of the eye; and an analyzing part which dissolves the photographed interference image to a plurality of color components, determines an appearance of interference stripes of each color component based on a signal of each color component, and obtains a value indicating a dry eye symptom based on at least one of the number of interference stripes of each color component and changes in signal level of each color component.
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Number of Claims:
5
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Owner
Nidek Co., Ltd. (Gamagori,JP)
Published
January 22, 2008
Application Number
11/038,527
Filed
January 21, 2005
US Classification
351/206   351/200
Int'l Classification
A61B   3/10   (20060101)   A61B   3/00   (20060101)  
Examiner
Assistant Examiner
Attorney/Law Firm
Priority Data
Jan 27, 2004 [JP] 2004-019078
USPTO Field of Search
351/206  
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