Refraction: 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 · Refraction

Sample item

What refractive error results from unequal curvature in different meridians of the eye?

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

The answer and the reasoning

D. Astigmatism

Astigmatism occurs when corneal or lenticular curvature differs across meridians, causing light to focus at different planes rather than one point.

Option by option

  • A. Myopia

    Myopia focuses parallel rays in front of the retina.

  • B. Hypermetropia

    Hypermetropia focuses parallel rays behind the retina.

  • C. Presbyopia

    Presbyopia is age-related loss of accommodation.

  • D. Astigmatism (correct)

    Correct: unequal meridional curvature produces astigmatism.

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, Astigmatism. Astigmatism occurs when corneal or lenticular curvature differs across meridians, causing light to focus at different planes rather than one point.

Why is "Myopia" not the answer?

Myopia focuses parallel rays in front of the retina.

Why is "Hypermetropia" not the answer?

Hypermetropia focuses parallel rays behind the retina.

Why is "Presbyopia" not the answer?

Presbyopia is age-related loss of accommodation.

What concept does this question test?

It tests Refraction in Ophthalmology. The correct option holds because: Correct: unequal meridional curvature produces astigmatism.

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 Refraction?

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.