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Ophthalmology · Ocular pharmacology
Sample itemWhy are topical beta blockers used cautiously in asthma?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Systemic absorption can provoke bronchospasm
Topical beta blockers can be systemically absorbed through nasal mucosa and may trigger bronchospasm or bradycardia in susceptible patients.
Option by option
A. They cause retinal detachment
Retinal detachment is not their typical adverse effect.
B. They always dilate the pupil
Beta blockers do not reliably dilate pupils.
C. They permanently stain the cornea
Corneal staining is not a usual permanent consequence.
D. Systemic absorption can provoke bronchospasm (correct)
Correct: systemic beta blockade can affect airways and heart.
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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