Background: The gоal of this study is to compare incidence of recurrence of pterygium following bare sclera technique with mitomycin C in comparison to conjunctival autograft Methods:  Our study included 40 cases subdivided into 2 groups; 20 cases managed by pterygium excision and intraoperative application of MMC 0.02% for 2 minutes and 20 cases managed by pterygium excision and limbal conjunctival auto graft transplantation ranged from 25 to 65 years old, with mean age of 44.2 years in 1st group, 43.8 years in 2nd group. SD in 1 st group +/- 10.2 and in 2nd group +/-11.3, in 1st group 14 cases (70%) were male and 6 cases (30%) were female, in 2nd group 15 cases (75%) were male and 5 cases (25%) were female. In 1st group the average of recurrence after two months is 3 cases with conjunctival recurrence. In 2nd group, the average of recurrence after two months is 1 case with episcleral vessels with p value <0.05. Results: It was found that recurrences of pterygium in patients managed with MMC are significantly higher than in patients managed with LCAG. Conclusion: LCAG is a good method in management for primary pterygium with low recurrence rate.