Objective: To assess the effects of 0.20 mg of mitomycin C washing on the pterygium recurrence. Methodology: A total of 15 individuals were included in this observational retrospective analysis. They underwent pterygium surgery using 0.20 mg of mitomycin C and a graft. The postoperative care given to each group was the same. Results: There were no recurrences, with a P-value of 0.000. Conclusion: This case series indicates that just washing the bare sclera with MMC is effective against recurrence.