Category
Ophthalmology Diagnostic
Typical Use
Estimate refractive error by observing reflexes from the retina.
Description
A handheld optical instrument that projects a streak or spot of light into the eye while the clinician observes the red reflex movement to estimate refractive errors and guide objective refraction, particularly useful in nonverbal patients and pediatric examinations. Retinoscopy technique involves neutralizing reflex motion with corrective lenses and interpreting reflex brightness and movement to determine spherical and cylindrical components of refractive error. Accurate retinoscopy requires training in technique, appropriate working distance correction, and consideration of accommodation, and it complements subjective refraction for final prescription. The retinoscope remains a fundamental tool in comprehensive eye exams and pediatric vision screening.