Ferdinand Monoyer

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

  1. ^ "MONOYER (Ferdinand)". BIU Santé. Retrieved 12 September 2014.
  2. ^ Keating, Michael P. (1 September 1975). "Vergence, vision, and geometric optics" (PDF). American Journal of Physics. 43 (9): 766–769. Bibcode:1975AmJPh..43..766K. doi:10.1119/1.9703. ISSN 0002-9505.
  3. ^ Koki, G.; Bella, A.-L.; Ndocko, K.-E. Mbassi; Epée, E.; Mvogo, C. Ebana; Bella, A.-L.; Ndocko, K.-E. Mbassi; Eballé, A. Omgbwa (2013). "Complications oculaires, à l'exclusion de la rétinopathie diabétique, chez le jeune diabétique de type 1, au Cameroun". Médecine des Maladies Métaboliques. 7 (5): 473–476. doi:10.1016/s1957-2557(13)70546-7. ISSN 1957-2557.
  4. ^ "Le test d'acuité visuelle Monoyer cache le nom de son inventeur". secouchermoinsbete.fr (in French). 6 June 2011. Retrieved 11 September 2014.