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  1. Oxford Dictionary

    Snellen test

    • IPA[ˈsnɛlən]

    英式

    • n.
      an eyesight test using rows of letters printed in successively decreasing sizes (the Snellen scale) of which patients are asked to read as many as they can.

    • noun: Snellen test, plural noun: Snellen tests

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    Snellen test

    • IPA[ˈsnelən ˌtest]

    美式

    • n.
      a test of visual acuity using rows of letters printed in successively decreasing sizes (the ...

    Oxford American Dictionary