Ferdinand Monoyer

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Born9 May 1836
Died11 July 1912(1912-07-11) (aged 76)
Lyon, France
Occupationophthalmologist
Ferdinand Monoyer
Born9 May 1836
Died11 July 1912(1912-07-11) (aged 76)
Lyon, France
Occupationophthalmologist

Ferdinand Monoyer (9 May 1836 – 11 July 1912[1]) was a French ophthalmologist, known for introducing the dioptre in 1872.[2]

Monoyer chart. Reading upwards on both ends (ignoring the last line), the name "Ferdinand Monoyer" can be seen

He invented the Monoyer chart, used to test visual acuity.[3] He inserted his name in the random letters of the chart. It appears when one reads vertically from bottom to top on each side.[4]

Death

References

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