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Ophthalmology · Lens: lens-induced uveitis
Sample itemA patient develops granulomatous inflammation after cataract extraction with retained cortical material. What is the cause?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Autoimmune reaction to lens protein
Phacoanaphylactic uveitis is an immune response to exposed lens protein, usually after trauma or surgery. Management is removal of the retained lens material with steroids.
Option by option
A. Autoimmune reaction to lens protein (correct)
Correct. The reaction is to lens antigens that were previously sequestered.
B. Bacterial infection
Bacterial infection gives endophthalmitis with a different time course.
C. Toxic reaction to viscoelastic
Toxic anterior segment syndrome presents within 24 hours without lens retention.
D. Viral reactivation
No viral process is involved.
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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