Definition of retinoscopy in US English:

retinoscopy

noun

Ophthalmology
  • A method for determining the refraction of the eye by projecting a beam of light into it and observing the movements of the illuminated area of the retina and the light reflected back through the pupil.

Origin

Mid 19th century (in an earlier sense). From retino- + -scopy. In sense 2 after French rétinoscopie.

Pronunciation

retinoscopy

/ˌrɛtɪˈnɒskəpi/