OPHTHALMOLOGIC APPARATUS

摘要

An ophthalmologic apparatus comprises a light source 12, an optical measurement system 13 that radiates first light from the light source to inside an eye to be examined and guides first reflected light from the eye, an optical reference system (24, 22) that radiates second light from the light source to a reference surface and guides second reflected light from the reference surface, a photo detector 26 that detects interfering light between the first reflected light from the optical measurement system and the second reflected light from the optical reference system, and a processor that determines a position of a measuring portion of the inside of the eye based on the detected interfering light. The optical measurement system comprises an incident angle changing member 46 that changes an incident angle of the first light radiated to the eye within a predetermined angular range relative to an axis of vision of the eye.

主权项

1. An ophthalmologic apparatus comprising:
a light source; an optical measurement system that radiates first light from the light source to inside an eye to be examined and guides first reflected light from the eye; an optical reference system that radiates second light from the light source to a reference surface and guides second reflected light from the reference surface; a photo detector that detects interfering light between the first reflected light from the optical measurement system and the second reflected light from the optical reference system; and a processor that determines a first position of a first measuring portion inside the eye based on the detected interfering light and a second position of the second measuring portion inside the eye based on the detected interfering light, the processor further determining an axial length from the first position to the second position, wherein the optical measurement system comprises a focal point adjustment mechanism that changes a focal point of the first light in its focal aim direction, and a 0 point adjustment mechanism that changes an optical path length between the light source and the eye in order to change a 0 point in which the optical path length between the light source and the eye matches an optical path length between the light source and the reference surface, the processor determines the first position of the first measuring portion based on the first detected interfering light obtained when the focal point and the 0 point are matched with the first position, and the processor determines the second position of the second measuring portion based on the second detected interfering light obtained when the focal point and the 0 point are matched with the second position.