Samenvatting
The response of the pupil was measured to a foveally fixated small field in which checkerboards were alternated with a blank field of equal average luminance. A pupil visual acuity could be derived, which showed a very high correlation with the subjective acuity with the same checkerboard stimuli. The method of obtaining pupil visual acuity seems to compare favorably with other objective methods of measuring visual acuity.