The authors in a retrospective study assess the recurrence rate of pterygium after the application of a single intraoperative dosage of topical Mitomycin C during the pterygium excision. The group involves 21 eyes of 19 patients with primary pterygia. When using technique of simple pterygium excision followed by appli- cation 0,02 % MMC onto a bare sclera in duration 3 minutes, pterygium recurred in 5 patients (23,8 %). The authors noticed a distinct difference in pterygium recurrence relating to the age of patients. Under the age 50 the recurrence occurred in each of 4 patients, above the age 50 only in one out of 17 patients (5,9 %).

        Key words: pterygium, Mitomycin C, recurrence rate