The pupil.
Perkin
G D
GD
Regional Neurosciences Centre, Charing Cross Hospital, London, UK.
D049670:History, 17th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008093:Literature, Modern / Q000266:history*; D011680:Pupil / Q000502:physiology*; D012025:Reflex, Pupillary