OPTOMETRY APPARATUS AND OPTOMETRY PROGRAM

The present invention addresses the problem of providing an optometry apparatus and optometry program with which, when an open-field monocular examination is performed, a fogging state suitable to the examinee can be easily set. The optometry apparatus includes: a pair of right and left lens units disposed in an optical path of a target light flux projected onto an examinee's eye, for changing an optical characteristic of the target light flux; a drive means for driving the lens units; a control means for controlling driving of the drive means; and an acquisition means for acquiring a targeted visual acuity value at the time of fogging. The control means determines an amount of fog for fogging the examinee's eye on the basis of the targeted visual acuity value acquired by the acquisition means.