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  • Title: Low-dose intraoperative mitomycin-C versus conjunctival autograft in primary pterygium surgery: long term follow-up.
    Author: Sharma A, Gupta A, Ram J, Gupta A.
    Journal: Ophthalmic Surg Lasers; 2000; 31(4):301-7. PubMed ID: 10928667.
    Abstract:
    PURPOSE: To evaluate and compare the long term safety and efficacy of low-dose intraoperative application of mitomycin-C (0.02%) with conjunctival autograft in primary pterygium surgery. PATIENTS AND METHODS: Of 37 consecutive patients 41 eyes with primary pterygium underwent pterygium excision with either intraoperative mitomycin-C (0.02%) (Group I) or conjunctival autografts (Group II) at random. Mitomycin-C (0.2 mg/mL) was applied for 2.5 minutes on the scleral bed under the conjunctiva. Conjunctival autograft was obtained from upper temporal limbus and secured with 10-0 monofilament nylon. The follow-up period ranged from 14 to 54 months (mean 36 months) for mitomycin-C group and 13 to 58 months (mean 38 months) for conjunctival autograft group. RESULTS: Twenty-one eyes underwent pterygium excision with intraoperative mitomycin-C (0.02%) application (Group I) and 20 eyes were treated using conjunctival autograft (Group II). The mean size of the pterygium was 3.80 mm (range 2.6 to 4.8 mm) in the mitomycin-C group and 3.60 mm (range 2.5 to 4.5 mm) in the conjunctival autograft group. Two (9.52%) eyes treated with intraoperative mitomycin-C had delayed epithelial healing of corneoscleral wound and one (4.76%) eye developed pyogenic granuloma. Three (14.3%) of the 21 eyes in Group I and one (5%) of 20 eyes in Group II had recurrence of pterygium (P = 0.3174). All recurrences occurred in patients below 40 years of age (P = 0.0384). CONCLUSION: We conclude that conjunctival autograft and intraoperative mitomycin-C are both equally effective adjuncts to primary pterygium surgery on long term follow-up. However, future prospective studies with larger numbers of subjects may be carried out to find out the optimum concentration and duration of intraoperative mitomycin-C application.
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