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retinoscope

[ ret-n-uh-skohp ]
/ ˈrɛt n əˌskoʊp /
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noun Ophthalmology.
an apparatus that determines the refractive power of the eye by observing the lights and shadows on the pupil when a mirror illumines the retina; skiascope.
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Origin of retinoscope

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
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