The ability to distinguish which eye was stimulated by light.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008027:Light; D008297:Male; D008722:Methods; D008875:Middle Aged; D012160:Retina / Q000502:physiology; D013285:Strabismus / Q000503:physiopathology; D014787:Vision Tests; D014794:Visual Fields; D014796:Visual Perception