Patent ID: 8079708

Claim:
An eye refractive power measurement apparatus comprising: a measuring optical system that projects measurement light onto a fundus of an examinee's eye, extracts as ring-shaped light the measurement light reflected from the fundus, and causes an imaging device to capture a ring-shaped image; a light deflecting member that is arranged at a position, which is out of a conjugated position with a pupil of the examinee's eye, on an optical path of the measuring optical system; a rotor that causes the light deflecting member to rotate about an optical axis of the measuring optical system; and an eccentricity amount changer that changes an amount of eccentricity of the measurement light, which is rotated eccentrically on a surface of the pupil, with respect to a center of the pupil, in order to change a region, where the measurement light passes, on the surface of the pupil through which the measurement light passes.