Variation of the visual threshold with retinal location. II. The fovea.
D000221:Adaptation, Ocular; D000328:Adult; D003116:Color; D003623:Dark Adaptation; D006801:Humans; D008027:Light; D008266:Macula Lutea / Q000502:physiology*; D008722:Methods; D012171:Retinal Vessels; D014785:Vision, Ocular