retinoscopy

noun
ret·​i·​nos·​co·​py | \ˌre-tə-ˈnä-skə-pē \
plural retinoscopies

Definition of retinoscopy 

: observation of the retina of the eye especially to determine the state of refraction

First Known Use of retinoscopy

1880, in the meaning defined above

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The first known use of retinoscopy was in 1880

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retinoscopy

noun
ret·​i·​nos·​co·​py | \ˌret-ᵊn-ˈäs-kə-pē \
plural retinoscopies

Medical Definition of retinoscopy 

: 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

Other Words from retinoscopy

retinoscopic \ˌret-​ᵊn-​ə-​ˈskäp-​ik \ adjective

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