Patent ID: 7216984

Claim:
An optometric apparatus for a subjective examination of a visual function of an eye of an examinee, the apparatus including: a pair of right and left lens chamber units, each including, a test window; and a rotating disk on which a plurality of optical elements are mounted in a circumferential arrangement to be changeably placed in the test window, the optical elements including a green filter and an aperture; instruction means for generating a signal to instruct a start of a red/green test in which a red optotype and a green optotype are simultaneously presented to the examinee's eye; and control means for drivingly controlling the rotating disk in response to the signal from the instruction means to place the green filter in the test window for a first predetermined time and then place the aperture in the test window for a second predetermined time while the red optotype and the green optotype are simultaneously presented to the examinee's eye.