About Ferdinand Monoyer
Ferdinand Monoyer (9 May 1836 – 11 July 1912) was a French ophthalmologist, known for introducing the dioptre in 1872. He invented the Monoyer chart, used to test visual acuity. He inserted his name in the random letters of the chart. It appears when one reads vertically from bottom to top on each side. == Biography == Monoyer was of Alsatian heritage by his mother and his father was a French military doctor. He was an associate professor of medical physics at the Faculty of Medicine, University of Strasbourg in 1871. Later, he was the director of the Ophthalmic Clinic of the Faculty of Medicine, Nancy-Université from 1872 to 1877. He was also professor of medical physics at the Faculty of Medicine, University of Lyon, from 1877 to 1909. == Death == Monoyer died at the age of 76 years. His tomb is located in the Cimetière de la Guillotière in Lyon.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.