Visual pathway: temporal lobe: 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 · Visual pathway: temporal lobe

Sample item

A patient with a temporal lobe tumour involving Meyer's loop has what visual field defect?

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

The answer and the reasoning

D. Contralateral superior homonymous quadrantanopia

Meyer's loop carries inferior retinal fibres representing the superior visual field, giving pie in the sky. Parietal lesions affect the upper radiations and give an inferior quadrantanopia.

Option by option

  • A. Bitemporal hemianopia

    Bitemporal loss is chiasmal.

  • B. Ipsilateral hemianopia

    Postchiasmal lesions give contralateral loss.

  • C. Contralateral inferior homonymous quadrantanopia

    Pie on the floor arises from parietal lesions.

  • D. Contralateral superior homonymous quadrantanopia (correct)

    Correct. Temporal lobe lesions give pie in the sky.

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, Contralateral superior homonymous quadrantanopia. Meyer's loop carries inferior retinal fibres representing the superior visual field, giving pie in the sky.

Why is "Bitemporal hemianopia" not the answer?

Bitemporal loss is chiasmal.

Why is "Ipsilateral hemianopia" not the answer?

Postchiasmal lesions give contralateral loss.

Why is "Contralateral inferior homonymous quadrantanopia" not the answer?

Pie on the floor arises from parietal lesions.

What concept does this question test?

It tests Visual pathway: temporal lobe in Ophthalmology. Parietal lesions affect the upper radiations and give an inferior quadrantanopia.

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 Visual pathway: temporal lobe?

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.