Etymed
keratosis
Definition
An abnormal condition characterized by excessive growth of horny (keratinized) tissue of the skin
Clinical context
A 65-year-old patient presents with progressive visual impairment and photophobia in the right eye. On examination, the cornea shows multiple white, waxy lesions with surrounding vascularization. The patient has a history of chronic sun exposure. A biopsy reveals abnormal keratinization of the corneal epithelium with hyperplasia of the superficial layers.
Mnemonic
Keratosis = Keratin + osis (abnormal condition) - Think 'Keratin' in the skin/eye = Hyperkeratosis