Cornea & Conjunctiva · NEET PG Preparation Ophthalmology
A 68-year-old male presents with a progressive, painless, white opacification of the peripheral cornea in his right eye. Slit-lamp examination shows…
Practice question from Cornea & Conjunctiva (NEET PG Preparation Ophthalmology), with the correct answer and a step-by-step solution.
medium · MCQ · Q-6B3087
A 68-year-old male presents with a progressive, painless, white opacification of the peripheral cornea in his right eye. Slit-lamp examination shows a band-like grey-white opacity in the interpalpebral zone of the superficial cornea, separated from the limbus by a clear interval of Vogt. What is the most likely diagnosis?
- A.Band keratopathy
- B.Arcus senilisCorrect answer
- C.Salzmann nodular degeneration
- D.Terrien marginal degeneration
Solution
Arcus senilis (gerontoxon) is a common peripheral corneal opacity caused by lipid deposition in the peripheral stroma. It typically affects elderly individuals and is characterized by a clear zone of Vogt separating the opacity from the limbus. Band keratopathy, conversely, features calcium deposition in the interpalpebral zone affecting Bowman's layer, extending right up to the limbus with a clear peripheral interval.
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