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单词 optometer
释义

optometer

/ɒpˈtɒmɪtə /
noun
An instrument for testing the refractive power of the eye.He immediately became hypermetropic (long sighted) in that eye, but using his optometer found ‘the same inequality in the horizontal and vertical refractions as without the water’....
  • We have developed an optometer to measure the ocular astigmatism of human eyes and tested its performance.

Origin

Mid 18th century: from Greek optos 'seen' + -meter.

Rhymes

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更新时间:2024/9/22 10:29:37