snellen : Idioms & Phrases


hermann snellen

  • noun Dutch ophthalmologist who introduced the Snellen chart to study visual acuity (1834-1908)
    Snellen.
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snellen chart

  • noun display consisting of a printed card with letters and numbers in lines of decreasing size; used to test visual acuity
WordNet

snellen test

  • noun a test of visual acuity using a Snellen chart
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