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.
Mid 18th century: from Greek optos 'seen' + -meter.
Words that rhyme with optometeraccelerometer, anemometer, barometer, gasometer, geometer, manometer, micrometer, milometer, olfactometer, pedometer, photometer, pyrometer, speedometer, swingometer, tachometer, thermometer
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Line breaks: op¦tom|eter
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