Randolph Field, TX. Cpl. Charles F. Morris of Bristow, OK, an assistant instructor of aviation medical examiners at the US Air Force School of Aviation Medicine, is just all eyes these days. These two giant specimens are used in classes to teach the fundamental actions of the muscles used by the eyes and they even light up in real life fashion. Moved by two small motors, the large-sized eyes also enable large groups to see its actions in classroom discussions, and are another of the instruments developed by aero medical researchers in the continuing program of aviation medicine.

via Otis Historical Archives – National Museum of Health and Medicine