Photic reflex and pretectal region.
D000818:Animals; D002415:Cats; D008027:Light; D008636:Mesencephalon / Q000502:physiology*; D011149:Pons / Q000502:physiology; D011680:Pupil / Q000502:physiology; D012018:Reflex; D014276:Trigeminal Nerve / Q000502:physiology; D014785:Vision, Ocular