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Ophthalmology · Refraction
Sample itemWhat physiological change causes presbyopia?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Age-related loss of lens accommodation
Presbyopia results from gradual loss of lens elasticity and accommodative ability, causing difficulty focusing on near objects with age.
Option by option
A. Age-related loss of lens accommodation (correct)
Correct: reduced accommodation is the mechanism.
B. Increased tear production
Tears do not cause presbyopia.
C. Retinal detachment
Retinal detachment affects field.
D. Progressive corneal ulceration
Corneal ulcer is pathological and painful.
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.