Monoyer chart

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| name = Monoyer chart

| image = File:Échelle Monoyer.jpg|thumbnail|

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| caption = Monoyer chart. Reading upwards on both ends, but ignoring the first line, the name "Ferdinand Monoyer" can be seen

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|purpose = test visual acuity

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The Monoyer chart was created by Ferdinand Monoyer and is used to test visual acuity.{{cite journal |last=Koki, G.|date=October 2013 |title=Complications oculaires, à l'exclusion de la rétinopathie diabétique, chez le jeune diabétique de type 1, au Cameroun |trans-title=Ocular complications, excluding diabetic retinopathy, in young type 1 diabetic patient in Cameroon |language=French |journal=Médecine des Maladies Métaboliques |doi=10.1016/S1957-2557(13)70546-7 |volume=7 |issue=5 |pages=473–476|display-authors=etal}} He inserted his name in the chart; reading upwards on both ends, but ignoring the first line, the name "Ferdinand Monoyer" can be seen.