Squint: Duane retraction syndrome: 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.

Try it

Ophthalmology · Squint: Duane retraction syndrome

Sample item

A child has limited abduction of the left eye, with narrowing of the palpebral fissure and globe retraction on adduction. What is the diagnosis?

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

The answer and the reasoning

A. Duane retraction syndrome

Duane syndrome results from congenital absence of the abducens nucleus with aberrant innervation of the lateral rectus by the oculomotor nerve. Co-contraction on adduction causes retraction.

Option by option

  • A. Duane retraction syndrome (correct)

    Correct. Globe retraction on adduction is characteristic.

  • B. Brown syndrome

    Brown syndrome shows limited elevation in adduction.

  • C. Moebius syndrome

    Moebius syndrome has bilateral facial and abducens palsies.

  • D. Third nerve palsy

    Third nerve palsy gives ptosis and a down-and-out eye.

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.

More Ophthalmology questions

Questions about this Ophthalmology question

What is the answer to this Ophthalmology question?

The best answer is A, Duane retraction syndrome. Duane syndrome results from congenital absence of the abducens nucleus with aberrant innervation of the lateral rectus by the oculomotor nerve.

Why is "Brown syndrome" not the answer?

Brown syndrome shows limited elevation in adduction.

Why is "Moebius syndrome" not the answer?

Moebius syndrome has bilateral facial and abducens palsies.

Why is "Third nerve palsy" not the answer?

Third nerve palsy gives ptosis and a down-and-out eye.

What concept does this question test?

It tests Squint: Duane retraction syndrome in Ophthalmology. Co-contraction on adduction causes retraction.

How hard is this question?

We tag it as a multi-step question: it asks you to combine more than one idea. 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 Squint: Duane retraction syndrome?

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.