Measures of monocular and binocular subjective visual acuity were obtained for 5 rhesus monkeys (Macaca mulatta) at both near (3 ft.) and far (20 ft.) viewing distances. The visual acuity stimuli were Landolt rings which had gap-openings varying between 0.5 and 2.0 min. of arc. No differences were found between the near and far acuity of the 5 Ss. Binocular acuity was superior to monocular acuity.
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