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Ophthalmology · Squint and amblyopia
Sample itemA four-year-old child has a constant convergent squint of the right eye and reduced vision in that eye with no organic disease. After correction of any refractive error, what is the treatment of the amblyopia?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Occlusion (patching) of the better eye
Amblyopia is a cortical visual deficit from abnormal binocular input during the sensitive period of early childhood. Forcing use of the weaker eye by patching the fixing eye improves its vision, and treatment is most effective at young ages. Surgery aligns the eyes but does not by itself treat amblyopia.
Option by option
A. Reassurance, since the child will outgrow it
Amblyopia does not resolve with age and becomes harder to treat later.
B. Occlusion (patching) of the better eye (correct)
Correct. Patching the better eye makes the weak eye work and improves vision.
C. Squint surgery alone, with no occlusion
Surgery corrects alignment but does not restore the lost cortical vision.
D. Occlusion of the amblyopic eye
Patching the amblyopic eye would deepen the deficit.
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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