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 complaint is typical of trochlear nerve palsy?

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

The answer and the reasoning

D. Vertical diplopia worse descending stairs

Trochlear palsy weakens superior oblique, so vertical diplopia worsens in down-and-in gaze such as reading or descending stairs.

Option by option

  • A. Halos with nausea

    Halos with nausea suggest angle closure.

  • B. Itchy eyes after pollen

    Pollen itch suggests allergy.

  • C. Horizontal diplopia on distant gaze

    Distant horizontal diplopia suggests sixth palsy.

  • D. Vertical diplopia worse descending stairs (correct)

    Correct: downgaze vertical diplopia suggests fourth-nerve palsy.

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, Vertical diplopia worse descending stairs. Trochlear palsy weakens superior oblique, so vertical diplopia worsens in down-and-in gaze such as reading or descending stairs.

Why is "Halos with nausea" not the answer?

Halos with nausea suggest angle closure.

Why is "Itchy eyes after pollen" not the answer?

Pollen itch suggests allergy.

Why is "Horizontal diplopia on distant gaze" not the answer?

Distant horizontal diplopia suggests sixth palsy.

What concept does this question test?

It tests Ocular motility in Ophthalmology. The correct option holds because: Correct: downgaze vertical diplopia suggests fourth-nerve palsy.

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.