Light and dark adaptation of the retina.
D000221:Adaptation, Ocular; D003623:Dark Adaptation; D006801:Humans; D008027:Light; D010786:Photoreceptor Cells / Q000502:physiology*; D012160:Retina / Q000502:physiology*; D012168:Retinal Pigments / Q000502:physiology; D014785:Vision, Ocular
D012168:Retinal Pigments