May | 09, 2017 :: Google celebrated birthday of French ophthalmologist, Ferdinand Monoyer with an animated Doodle
Ferdinand Monoyer was a French ophthalmologist, known for introducing the dioptre in 1872. He was born in Lyon, France on May 9, 1836. He died in Lyon on July 11, 1912.
He invented the Monoyer chart, used to test visual acuity. He inserted his name in the chart; reading vertically from bottom to top on each side of the chart, one can read his name.
