Patent ID: 7434932
Filing Date: 2008-10-14
Classification: A61B

Abstract:
1. An ophthalmic apparatus for obtaining ocular information on an examinee's eye without contacting the eye, the apparatus comprising: a first projection optical system comprising: which makes a first portion of the dispersed light converge as a first light at a fundus of the eye; a second projection optical system which makes a second portion of the dispersed light converge as a second light at an anterior segment of the eye; a photo-receiving optical system comprising: and where the photo-receiving optical system disperses the interference light into frequency components, and photo-receives the dispersed interference light with a first photodetector; and a calculation part which obtains an axial length of the eye as ocular information based on a result obtained by analyzing an output signal from the first photodetector by means of Fourier transform and an amount of change of at least one of the optical path length of the first light and the optical path length of the second light.