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FC Ophth(SA) Final Practice Questions - Fellowship Of The College Of Ophthalmologists Of South Africa Final Examination Exam

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A 19-year-old male with a history of vigorous eye rubbing secondary to vernal keratoconjunctivitis exhibits progressive astigmatism. Slit-lamp biomicroscopy demonstrates corneal iron deposition at the base of the cone (Fleischer ring) and fine vertical stromal lines that disappear under gentle digital pressure (Vogt striae). Pentacam corneal tomography confirms progressive keratoconus with pachymetry of 460 µm at the thinnest point. What is the definitive intervention to halt disease progression?
Correct Answer:
Corneal collagen cross-linking (CXL) using riboflavin and ultraviolet A light

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