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Ophthalmology · Ocular anatomy
Sample itemWhat gel-like material fills the posterior cavity of the eye?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Vitreous humor
Vitreous humor is a clear gel that fills the large posterior segment between the lens and retina, helping maintain globe shape.
Option by option
A. Vitreous humor (correct)
Correct: vitreous humor fills the posterior segment.
B. Tears
Tears coat the external ocular surface rather than the posterior cavity.
C. Aqueous humor
Aqueous humor fills the anterior and posterior chambers in front of the lens.
D. Lymph
Lymph is not the gel filling the eyeball.
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.