Rizzuti’s sign in advanced keratoconusA 24-year-old male presented with progressive, painless visual decline in the right eye, with a best-corrected visual acuity of 20/80. Slit-lamp photographs obtained with temporal illumination demonstrated a sharply demarcated conical light reflex on the nasal corneal surface (Figure 1A, B), consistent with Rizzuti’s sign(1). An-terior segment optical coherence tomography (Figure 1C) revealed apical corneal thinning, with a minimum corneal thickness of 422 μm. Rizzuti’s sign results from localized corneal steepening that focuses incident light onto the opposite limbal region and is a classic clinical sign of advanced keratoconus.
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Funding:
This study received no specific financial support.
Data Availability Statement:
The datasets generated and/or analyzed during the current study are included in the manuscript.
Edited by
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Editor-in-Chief:
Newton Kara-Júnior
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Associate Editor:
Carlos Augusto Moreira Neto
