Patent ID: 9351637
Filing Date: 2016-05-31
CPC Classification: A61B

Claim Text:
1. A cornea shape measurement apparatus for measuring a corneal shape of an examinee's eye, comprising: a first projecting optical system configured to project a first target on the cornea; a first imaging optical system configured to capture a reflection image of the first target projected on the cornea; a second projecting optical system configured to project a second target different from the first target on the cornea to measure the corneal shape; a second imaging optical system configured to capture a reflection image of the second target projected on the cornea; and a calculation controller configured to measure a first corneal shape of the examinee's eye based on the reflection image of the first target, the reflection image having been captured by the first imaging optical system, adjust the amount of projection light of the second projecting optical system based on the first corneal shape, and measure a second corneal shape of the examinee's eye based on the reflection image of the second target, the reflection image having been captured by the second imaging optical system, wherein the calculation controller measures a radius of curvature of the cornea based on the reflection image of the first target, the reflection image having been captured by the first imaging optical system, sets the amount of projection light of the second projecting optical system smaller as the radius of curvature is larger, and sets the amount of projection light of the second projecting optical system larger as the radius of curvature is smaller.