Anatomy: angle structures on gonioscopy: 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 · Anatomy: angle structures on gonioscopy

Sample item

On gonioscopy the structures are identified from anterior to posterior in an open angle. Which order is correct?

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

The answer and the reasoning

A. Schwalbe line, trabecular meshwork, scleral spur, ciliary body band, iris root

The angle from front to back shows Schwalbe line, the trabecular meshwork, the scleral spur, the ciliary body band and the iris root. Gonioscopy findings guide the diagnosis of angle closure and angle recession. The pigment is greatest on the posterior trabecular meshwork.

Option by option

  • A. Schwalbe line, trabecular meshwork, scleral spur, ciliary body band, iris root (correct)

    Correct. This is the standard order from anterior to posterior.

  • B. Iris root, ciliary body band, scleral spur, trabecular meshwork, Schwalbe line

    This is the reverse order, from posterior to anterior.

  • C. Schwalbe line, scleral spur, trabecular meshwork, iris root, ciliary body band

    Here the trabecular meshwork and scleral spur are transposed, and the iris root is placed ahead of the ciliary body band.

  • D. Trabecular meshwork, Schwalbe line, ciliary body band, scleral spur, iris root

    Schwalbe line is the most anterior landmark, ahead of the trabecular meshwork.

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 A, Schwalbe line, trabecular meshwork, scleral spur, ciliary body band, iris root. The angle from front to back shows Schwalbe line, the trabecular meshwork, the scleral spur, the ciliary body band and the iris root.

Why is "Iris root, ciliary body band, scleral spur, trabecular meshwork, Schw…" not the answer?

This is the reverse order, from posterior to anterior.

Why is "Schwalbe line, scleral spur, trabecular meshwork, iris root, ciliary…" not the answer?

Here the trabecular meshwork and scleral spur are transposed, and the iris root is placed ahead of the ciliary body band.

Why is "Trabecular meshwork, Schwalbe line, ciliary body band, scleral spur,…" not the answer?

Schwalbe line is the most anterior landmark, ahead of the trabecular meshwork.

What concept does this question test?

It tests Anatomy: angle structures on gonioscopy in Ophthalmology. Gonioscopy findings guide the diagnosis of angle closure and angle recession. The pigment is greatest on the posterior trabecular meshwork.

How hard is this question?

We tag it as a multi-step question: it asks you to combine more than one idea. 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 Anatomy: angle structures on gonioscopy?

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.