One of the mysteries of the English language finally explained.
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.
Mid 19th century (in an earlier sense). From retino- + -scopy. In sense 2 after French rétinoscopie.
In this article we explore how to impress employers with a spot-on CV.