A 28 year-old woman presented to the Ophthalmology Clinic at the Armed Forces Hospital, Muscat, Oman, with severe pain, redness, photophobia and decrease in visual acuity of her left eye of 1 day's duration. She gave a history of a pterygium excision with intraoperative topical mitomycin-C application (0.1 mg/ml for 5 minutes ) in the same eye two years before. There was no other systemic or local disease. She underwent a detailed ophthalmic and systemic evaluation and laboratory examination.