Ophthalmologic instrument

Details Ophthalmologic instrument Ophthalmologic instrument

2006-01-18

2010-02-16

Sugarman, Scott J (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S221000, C351S246000

Reexamination Certificate

active

07661820

ABSTRACT:
The present invention provides an ophthalmologic apparatus that can noninvasively measure the state of the lacrimal layer formed on the cornea surface and that can quantitatively measure the state of the lacrimal layer without utilizing a reflection image from the retina.The ophthalmologic apparatus according to the present invention comprises an optical projection system for projecting light of a specified pattern onto a cornea surface, and an imaging device for photographing a reflection image of the projected light from the cornea surface. An operating unit calculates the degree of distortion of the reflection image on the basis of the density value distribution of the image photographed by the imaging device. The operating unit can determine the state of the lacrimal layer using the calculated degree of distortion.

REFERENCES:
patent: 5054907 (1991-10-01), Sklar et al.
patent: 6299305 (2001-10-01), Miwa
patent: 2002/0180929 (2002-12-01), Tseng
patent: 2004/0212781 (2004-10-01), Mihashi et al.
patent: 1 029 504 (2000-08-01), None
patent: 8-266469 (1996-10-01), None
patent: 09 201334 (1997-08-01), None
patent: 2000-237135 (2000-09-01), None
patent: 2000-254099 (2000-09-01), None
patent: 2004-321508 (2004-11-01), None

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