Motility: Parinaud 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 · Motility: Parinaud syndrome

Sample item

A teenager with a pineal tumour has impaired upgaze, convergence-retraction nystagmus and light-near dissociation. What is this called?

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

The answer and the reasoning

B. Parinaud dorsal midbrain syndrome

Compression of the dorsal midbrain tectum gives upgaze palsy, eyelid retraction (Collier's sign) and light-near dissociation. Hydrocephalus from aqueduct compression may coexist.

Option by option

  • A. Weber syndrome

    Weber syndrome is third nerve palsy with contralateral hemiplegia.

  • B. Parinaud dorsal midbrain syndrome (correct)

    Correct. Upgaze palsy with convergence-retraction nystagmus is typical.

  • C. Benedikt syndrome

    Benedikt syndrome includes third nerve palsy and contralateral tremor.

  • D. Wallenberg syndrome

    Wallenberg is a lateral medullary syndrome.

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 B, Parinaud dorsal midbrain syndrome. Compression of the dorsal midbrain tectum gives upgaze palsy, eyelid retraction (Collier's sign) and light-near dissociation.

Why is "Weber syndrome" not the answer?

Weber syndrome is third nerve palsy with contralateral hemiplegia.

Why is "Benedikt syndrome" not the answer?

Benedikt syndrome includes third nerve palsy and contralateral tremor.

Why is "Wallenberg syndrome" not the answer?

Wallenberg is a lateral medullary syndrome.

What concept does this question test?

It tests Motility: Parinaud syndrome in Ophthalmology. Hydrocephalus from aqueduct compression may coexist.

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 Motility: Parinaud 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.