Leonardo and the eye.
D005123:Eye / Q000033:anatomy & histology; D049668:History, 15th Century; D049669:History, 16th Century; D006801:Humans; D007558:Italy; D008488:Medical Illustration / Q000266:history*; D009799:Ocular Physiological Phenomena; D011305:Presbyopia / Q000266:history; D012029:Refraction, Ocular; D012160:Retina / Q000502:physiology; D014785:Vision, Ocular