Patent ID: 7341346

Claim:
An ocular accommodative function examination apparatus for examining an accommodative function of an examinee's eye, comprising: a fixation target presenting optical system which presents a fixation target to the eye by changing an optical distance; a refractive power measuring optical system which measures refractive power of the eye and includes a light projecting optical system which includes a light source and projects examination light to a fundus of the eye and a light receiving optical system which includes a light receiving element and receives the examination light reflected from the fundus; a control part which operates the refractive power measuring optical system to measure distance refractive power of the eye including spherical power, cylindrical power, and an astigmatic axis angle while causing the fixation target presenting optical system to apply a fogging to the eye, and determines a first presenting position of the fixation target based on the distance refractive power and causes the presenting position of the fixation target to be optically changed sequentially in predetermined steps from the first presenting position toward the eye to measure variations with time of refractive power in a specified measurement meridian direction of the eye within a predetermined time at each presenting position of the fixation target; and an analysis part which corrects the variations with time of the refractive power in the specified measurement meridian direction at each presenting position of the fixation target to variations with time of refractive power in a minor meridian direction based on the cylindrical power and the astigmatic axis angle of the distance refractive power and then performs a frequency analysis of the variations with time of the refractive power in the minor meridian direction to calculate spectral power of a high frequency component of an accommodative microfluctuation of the eye at each presenting position of the fixation target.