Reprinted from Understanding and Preventing Amblyopia. A Slide-Script Program. San Francisco: American Academy
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Pediatric Ophth/Strabismus
Evaluation of amblyopia. Assessing the red reflex allows the examiner to evaluate for two potential causes of amblyopia: media opacities and high refractive errors. The cornea, anterior chamber, lens, and vitreous must all be clear to allow a view of the retina. If the eye is unusually hyperopic or myopic, the red reflex may be very dim unless the ophthalmoscope’s high-power lenses are used.