ret·​i·​nos·​co·​py ˌre-tə-ˈnä-skə-pē How to pronounce retinoscopy (audio)
plural retinoscopies
: observation of the retina of the eye especially to determine the state of refraction

Word History

First Known Use

1880, in the meaning defined above

Time Traveler
The first known use of retinoscopy was in 1880

Dictionary Entries Near retinoscopy

Cite this Entry

“Retinoscopy.” Dictionary, Merriam-Webster, Accessed 24 Mar. 2023.

Medical Definition


ret·​i·​nos·​co·​py ˌret-ᵊn-ˈäs-kə-pē How to pronounce retinoscopy (audio)
plural retinoscopies
: a method of determining the state of refraction of the eye by illuminating the retina with a mirror and observing the direction of movement of the retinal illumination and adjacent shadow when the mirror is turned
retinoscopic adjective
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