Lens: lenticonus: 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 · Lens: lenticonus

Sample item

A boy with haematuria and sensorineural hearing loss has an oil-droplet reflex on retinoscopy from a conical anterior lens surface. What is the diagnosis?

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

The answer and the reasoning

C. Alport syndrome with anterior lenticonus

Alport syndrome results from type IV collagen mutations and is classically associated with anterior lenticonus and renal and hearing disease. The oil-droplet reflex is seen on distant direct ophthalmoscopy.

Option by option

  • A. Lowe syndrome

    Lowe syndrome has congenital cataract and renal tubular disease.

  • B. Wilson disease

    Wilson disease gives sunflower cataract.

  • C. Alport syndrome with anterior lenticonus (correct)

    Correct. Anterior lenticonus is characteristic.

  • D. Fabry disease

    Fabry disease gives cornea verticillata.

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 C, Alport syndrome with anterior lenticonus. Alport syndrome results from type IV collagen mutations and is classically associated with anterior lenticonus and renal and hearing disease.

Why is "Lowe syndrome" not the answer?

Lowe syndrome has congenital cataract and renal tubular disease.

Why is "Wilson disease" not the answer?

Wilson disease gives sunflower cataract.

Why is "Fabry disease" not the answer?

Fabry disease gives cornea verticillata.

What concept does this question test?

It tests Lens: lenticonus in Ophthalmology. The oil-droplet reflex is seen on distant direct ophthalmoscopy.

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 Lens: lenticonus?

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.