Patent ID: 6382796
Filing Date: 2002-05-07
Classification: A61B

Abstract:
A corneal shape measuring apparatus for measuring a corneal shape of an eye to be examined, the apparatus comprising:index projecting means having a first projecting optical system for projecting a corneal shape measuring index onto a cornea of the eye; index detecting means having a first imaging optical system for obtaining an image of an anterior eye segment including an image of the measuring index formed on the cornea; arithmetic means for obtaining the corneal shape based on the obtained image of the measuring index; and input means for inputting, to the arithmetic means, information on a boundary position between a pupil and an iris of the eye, wherein the arithmetic means corrects information on the image of the measuring index based on the information on the boundary position thus inputted, and obtains the corneal shape based on the thus corrected information on the image of the measuring index.