A 66-year-old pseudophakic man with primary open-angle glaucoma and ocular cicatricial pemphigoid underwent trabeculectomy and was given postoperative subconjunctival 5-fluorouracil. He developed an inferior corneal epithelial defect and, later, a well-demarcated area of inferior corneal keratinization. Since the corneal keratinization clinically improved with conservative management, surgical intervention was not required.