- A dictionary of medical eponyms

Snellen's test

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Test for visual acuity where the patient reads Snellen’s chart at a certain distance with one eye, then with the other, and then with both eyes. Acuity is given by the longest distance at which the patient is able to read the letters, divided with the distance at which he should normally be able to read them.

What is an eponym?

An eponym is a word derived from the name of a person, whether real or fictional. A medical eponym is thus any word related to medicine, whose name is derived from a person.

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Whonamedit.com is a biographical dictionary of medical eponyms. It is our ambition to present a complete survey of all medical phenomena named for a person, with a biography of that person.


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