The Stiles-Crawford colour change.
D000042:Absorption; D003116:Color; D006801:Humans; D008433:Mathematics; D008954:Models, Biological; D055095:Optics and Photonics; D010786:Photoreceptor Cells / Q000502:physiology*; D011680:Pupil / Q000502:physiology*; D012168:Retinal Pigments / Q000502:physiology; D013053:Spectrophotometry
D012168:Retinal Pigments