retinoscope

[ ret-n-uh-skohp ]

noun

, Ophthalmology.

1. 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.

Word History and Origins

Origin of retinoscope¹

retin(a) + -o- + -scope

Example Sentences

Tiny bulbs called ophthalmoscope and retinoscope that are used by eye doctors are made here.

From BBC

There the child is given a thorough and accurate examination, the eyes being first dilated with homatropin and the error of refraction determined by means of the retinoscope.

From Project Gutenberg