What does retinoscopy mean?
Retinoscopy is an objective examination used to determine how an eye focuses light. By shining a beam of light into the eye and observing how the reflected light moves across the retina, an optometrist or ophthalmologist can estimate refractive errors such as myopia, hyperopia, and astigmatism. The procedure is especially valuable for children, young people, and anyone unable to respond reliably to subjective tests that ask the patient to compare letters or images. Retinoscopy is generally performed with a handheld retinoscope in a darkened or suitably controlled environment. Unlike subjective refraction, in which the patient helps determine the correction, retinoscopy provides an objective measurement. Although closely associated with the examination of the eye's focusing system, it should not be confused with ophthalmoscopy, which involves directly inspecting the eye's internal structures.
nounAn examination of the retina using a retinoscope to determine the eye's refractive state and assess errors such as myopia, hyperopia, or astigmatism. It is especially used in pediatric optometry and ophthalmology.
- The clinical procedure of using a retinoscope to determine the eye's refractive state and identify focusing errors.
"The optometrist performed retinoscopy to determine the child's prescription before prescribing glasses."
"The clinician used retinoscopy to estimate the patient's level of myopia."
"Retinoscopy can be particularly useful when a child has difficulty cooperating with subjective refraction tests."
The plural is grammatically possible but rarely used; retinoscopy is commonly treated as an uncountable name for the procedure.
"The clinic documented several retinoscopies performed during the children's vision screening."
Retinoscopy turns the movement of a tiny beam of reflected light into a precise estimate of an eye's focusing error.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does retinoscopy come from?
The word is formed from the combining form retino-, associated with the retina, and -scopy, from Greek skopein, “to look at” or “examine.” The retina itself takes its name through Latin from a word meaning “net,” reflecting the netlike appearance of the light-sensitive tissue at the back of the eye. The combining form -scopy is widely used in names of diagnostic techniques for examining structures of the body.
Related word forms
How retinoscopy is actually used
The term is primarily used in optometry and ophthalmology. It is more technical than the everyday phrase “checking the eyes” and usually refers to the examination method rather than to the instrument used.
Easily confused with retinoscopy
Retinoscopy assesses the eye's refractive state by observing the reflection of light from the retina, whereas ophthalmoscopy examines the internal structures of the eye, including the retina, optic disc, and blood vessels.