Neuro-ophthalmology: 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 · Neuro-ophthalmology

Sample item

What field loss follows optic-chiasm compression?

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

The answer and the reasoning

D. Bitemporal hemianopia

Chiasmal compression disrupts crossing nasal retinal fibres, which carry temporal visual-field information from both eyes.

Option by option

  • A. Homonymous hemianopia

    Homonymous loss is retrochiasmal.

  • B. Altitudinal field loss

    Altitudinal loss has another optic-nerve pattern.

  • C. Monocular central scotoma

    Central scotoma often implicates optic nerve or macula.

  • D. Bitemporal hemianopia (correct)

    Correct: temporal fields are lost bilaterally.

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 D, Bitemporal hemianopia. Chiasmal compression disrupts crossing nasal retinal fibres, which carry temporal visual-field information from both eyes.

Why is "Homonymous hemianopia" not the answer?

Homonymous loss is retrochiasmal.

Why is "Altitudinal field loss" not the answer?

Altitudinal loss has another optic-nerve pattern.

Why is "Monocular central scotoma" not the answer?

Central scotoma often implicates optic nerve or macula.

What concept does this question test?

It tests Neuro-ophthalmology in Ophthalmology. The correct option holds because: Correct: temporal fields are lost bilaterally.

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 Neuro-ophthalmology?

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.