Ocular motility: practice question

A Ophthalmology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Ophthalmology · Ocular motility

Sample item

What does a cover-uncover test detect?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

D. Manifest strabismus

Cover-uncover testing detects a tropia by observing refixation movement of the uncovered eye when binocular fusion is disrupted.

Option by option

  • A. Retinal detachment

    Detachment needs dilated retinal exam.

  • B. Corneal abrasion

    Abrasion needs fluorescein.

  • C. Intraocular foreign body

    Foreign body needs slit-lamp or imaging.

  • D. Manifest strabismus (correct)

    Correct: refixation indicates manifest deviation.

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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Questions about this Ophthalmology question

What is the answer to this Ophthalmology question?

The best answer is D, Manifest strabismus. Cover-uncover testing detects a tropia by observing refixation movement of the uncovered eye when binocular fusion is disrupted.

Why is "Retinal detachment" not the answer?

Detachment needs dilated retinal exam.

Why is "Corneal abrasion" not the answer?

Abrasion needs fluorescein.

Why is "Intraocular foreign body" not the answer?

Foreign body needs slit-lamp or imaging.

What concept does this question test?

It tests Ocular motility in Ophthalmology. The correct option holds because: Correct: refixation indicates manifest deviation.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Ocular motility?

Group the red eye by what to examine and what the pupil does. Then use the flashcards and the other Ophthalmology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.