Presumed corneal intraepithelial neoplasia associated with contact lens wear and intense ultraviolet light exposure.

Corneal intraepithelial neoplasia (CIN) is a rare dysplastic process affecting mostly elderly fair-skinned people. A variant of the disease associated with contact lens wear was recently described. The three cases reported here had a history of contact lens wear together with strong ultraviolet light exposure. These two conditions may represent a serious risk factor for the development of CIN.