The 100th anniversary of the invention of the ophthalmoscope by Herrmann v. Helmholtz (1821-1894).
D000846:Anniversaries and Special Events; D049672:History, 19th Century; D062069:Inventions; D019721:Ophthalmoscopes; D009887:Ophthalmoscopy / Q000266:history*
BIOGRAPHY; OPHTHALMOSCOPY/history