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Ophthalmology · Retina: solar retinopathy
Sample itemA 19-year-old student watched a solar eclipse for several minutes without any filter. Two days later he has blurred central vision in both eyes with a small yellowish spot at each fovea. Which diagnosis fits best?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Solar retinopathy
Looking at the sun without protection damages the foveal photoreceptors and pigment epithelium, mainly by photochemical injury. A small yellow-white foveal lesion appears and later becomes a reddish pit. There is no effective treatment, so prevention with certified eclipse viewers is the key message.
Option by option
A. Commotio retinae
Commotio retinae follows blunt trauma and shows retinal whitening rather than a foveal spot after light exposure.
B. Central serous chorioretinopathy
Central serous chorioretinopathy gives a serous detachment, usually unilateral, in stressed adults on steroids.
C. Stargardt disease
Stargardt disease is an inherited macular dystrophy with gradual loss and no exposure history.
D. Solar retinopathy (correct)
Correct. Unprotected sun-gazing leads to a bilateral foveal lesion with central blur.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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