A 67-year-old man with visual acuity of 0.6 and 0.5 with grade 3 nuclear cataracts in both eyes. The left eye showed a grade I nasal pterygium and various lesions in the form of epithelial corneal islets with an inferior semicircular distribution, not affecting the visual axis. There were no inflammatory signs in the anterior segment and the rest of the examination was normal.
Treatment with Mitomycin-C 0.02% was started preoperatively (1), reducing the lesion to 1/3 of its size.
Cataract surgery was performed on both eyes using the MICS technique, excision of the pterygium in the left eye and excision of the corneal lesion, and the patient was referred for pathological examination, which revealed: conjunctival epithelium with foci of mild atypia of the cells of the basal layer, the atypia occupying up to 2/3 of the total thickness at the limbus level, with little pleomorphism. Actinic elastic degeneration of the chorion and scarce chronic subepithelial lymphocytic chronic inflammatory infiltrate.
After 6 months, the presence of isolated recurrent islets was observed, which were treated again with Mitomycin-C, the lesion regressed, and no new recurrences were observed during the 1-year follow-up.
