Ferdinand Monoyer

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. Read more on Wikipedia

His biography is available in undefined different languages on Wikipedia. Ferdinand Monoyer is the NaNth most popular physicist, the NaNth most popular biography from France.