Patent ID: 7296896
Filing Date: 2007-11-20
Classification: A61B

Abstract:
1. An ophthalmic measurement apparatus comprising: a projection optical system which projects slit light bundles onto a fundus of an examinee's eye, the projection optical system scanning the slit light bundles in predetermined first and second directions; a photo-receiving optical system provided with a plurality of photodetectors placed in positions approximately conjugate with a cornea of the examinee's eye, the photodetectors being placed in at least one meridian direction orthogonal to an optical axis of the photo-receiving optical system; and an arithmetic part which obtains, based on a signal indicating a phase difference at the time when one of the photodetectors photo-receives the slit light bundle scanned in the first scanning direction and a signal indicating a phase difference at the time when the photodetector photo-receives the slit light bundle scanned in the second scanning direction, refractive power in two directions at a corneal position corresponding to a position of the photodetector, and further obtains at least one of refractive power and a wavefront inclination by vector-synthesizing the obtained refractive power in the two directions.