Ocular anatomy: 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 anatomy

Sample item

Which structure regulates the amount of light entering the eye?

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

The answer and the reasoning

D. Iris

The defining Ocular anatomy relationship supports Iris; it is the option that directly accounts for the examination finding or clinical priority in this sample.

Option by option

  • A. Sclera

    Sclera is unsupported by the symptom pattern or examination result.

  • B. Optic nerve

    Optic nerve can be relevant elsewhere but is not the best conclusion here.

  • C. Retina

    Retina does not explain the stated ocular anatomy feature.

  • D. Iris (correct)

    Correct. Iris directly fits the key clue in the scenario.

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, Iris. The defining Ocular anatomy relationship supports Iris; it is the option that directly accounts for the examination finding or clinical priority in this sample.

Why is "Sclera" not the answer?

Sclera is unsupported by the symptom pattern or examination result.

Why is "Optic nerve" not the answer?

Optic nerve can be relevant elsewhere but is not the best conclusion here.

Why is "Retina" not the answer?

Retina does not explain the stated ocular anatomy feature.

What concept does this question test?

It tests Ocular anatomy in Ophthalmology. The correct option holds because: Correct. Iris directly fits the key clue in the scenario.

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 anatomy?

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.