Provided are a vision testing device and a vision testing program capable of obtaining a correct test result while reducing an accumulation of fatigue added on one of the eyes of a testee, including: image displays (13L, 13R) that present a light for suppressing a dark adaptation for both eyes (L, R) of a testee； and image displays (13L, 13R) that present a target for an eye (L, R, or both) of the testee so that the target is presented for one of the eyes R before the vision testing for the other eye L is ended.
