Skiascope aka Retinoscope

 

The term Skiascope comes from:

• "Skia" (Greek: σκιά) – meaning shadow
• "Scope" (Greek: σκοπέω) – meaning to examine or to observe

 

A skiascope is an instrument used to examine the movement of light and shadow in the pupil of the eye, primarily to determine refractive errors like myopia, hypermetropia, and astigmatism.

It is more commonly called a retinoscope today.

                                                             Skiascopy aka Retinoscopy

History Of The Retinoscope

Retinoscopy, as a clinical procedure, evolved from observations of the "shadow test" by Sir William Bowman in 1859

H. Parent is credited with coining the term "retinoscopy" in 1881 and is also recognized for refining the optical theory and initiating the use of lenses to quantify objective refraction. Retinoscopy is an objective technique used to measure refractive error, and Parent's contributions helped establish it as a valuable clinical tool. 

Uses Of Retinoscope 

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