Squint: paralytic features: 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: paralytic features

Sample item

Which feature differentiates paralytic squint from concomitant squint?

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

The answer and the reasoning

D. Angle of deviation varies with gaze direction

In paralytic squint the deviation changes with gaze direction, secondary deviation exceeds primary and there is diplopia and a compensatory head posture. In concomitant squint the angle is constant in all gazes.

Option by option

  • A. Full ocular movements

    Movements are restricted in paralytic squint.

  • B. Onset in early childhood

    Concomitant squint usually starts in childhood.

  • C. Equal primary and secondary deviation

    Equal deviations define concomitant squint.

  • D. Angle of deviation varies with gaze direction (correct)

    Correct. An incomitant deviation is the hallmark.

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, Angle of deviation varies with gaze direction. In paralytic squint the deviation changes with gaze direction, secondary deviation exceeds primary and there is diplopia and a compensatory head posture.

Why is "Full ocular movements" not the answer?

Movements are restricted in paralytic squint.

Why is "Onset in early childhood" not the answer?

Concomitant squint usually starts in childhood.

Why is "Equal primary and secondary deviation" not the answer?

Equal deviations define concomitant squint.

What concept does this question test?

It tests Squint: paralytic features in Ophthalmology. In concomitant squint the angle is constant in all gazes.

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 Squint: paralytic features?

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.