Squint: Moebius 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.

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Ophthalmology · Squint: Moebius syndrome

Sample item

A newborn has bilateral facial paralysis with inability to abduct either eye. What is the diagnosis?

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

The answer and the reasoning

D. Moebius syndrome

Moebius syndrome involves bilateral sixth and seventh cranial nerve palsies, often with limb anomalies. The infant has an expressionless face and esotropia.

Option by option

  • A. Duane syndrome

    Duane syndrome is unilateral mostly with retraction.

  • B. Bell's palsy

    Bell's palsy is an acquired unilateral facial palsy.

  • C. Congenital myasthenia

    Congenital myasthenia gives fatigable weakness.

  • D. Moebius syndrome (correct)

    Correct. Bilateral VI and VII involvement defines it.

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, Moebius syndrome. Moebius syndrome involves bilateral sixth and seventh cranial nerve palsies, often with limb anomalies.

Why is "Duane syndrome" not the answer?

Duane syndrome is unilateral mostly with retraction.

Why is "Bell's palsy" not the answer?

Bell's palsy is an acquired unilateral facial palsy.

Why is "Congenital myasthenia" not the answer?

Congenital myasthenia gives fatigable weakness.

What concept does this question test?

It tests Squint: Moebius syndrome in Ophthalmology. The infant has an expressionless face and esotropia.

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: Moebius 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.