A brilliant, uniform red reflex in both eyes during a funduscopic examination indicates:

• A. A normal finding that rules out many serious defects
• B. A sign of congenital cataract
• C. A sign of retinal detachment
• D. A sign of optic nerve atrophy

Answer: (A)

The red reflex test checks how light reflects from the back of the eye, indicating whether the eye’s media are clear and the retina is accessible. A brilliant, uniform red reflex in both eyes means the lenses, cornea, and vitreous are clear and the retina is functioning normally, which is a normal finding and suggests no serious conditions that would block or disrupt the reflex.

If a problem were present, you’d expect a different pattern. A congenital cataract would dull or whiten the reflex because the cloudy lens blocks the light. Retinal detachment tends to alter the reflex with irregularities or a diminished glow rather than a uniform bright red. Optic nerve atrophy affects the optic disc and vision more than the reflex itself, so it wouldn’t produce a characteristic abnormal red reflex in the same way.