IRCT20160919029871N5 IRCT 2021-12-26 Rasht University of Medical Sciences Comparison of the effect of interferon alfa 2 b (IFN-α2b) drops with mitomycin c during surgery on pterygium recurrence in pterygium surgery Comparison of the effect of interferon alfa 2 b (IFN-α2b) drops with mitomycin c during surgery on pterygium recurrence in pterygium surgery by Rotational conjunctival autograft method 2021-12-22 anticipated 58 Complete https://irct.ir/trial/60412 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Patients with random allocation software version 2 based on quadruple random blocks (with a choice of 15 quadruple random blocks), into two groups A (patients who, in addition to receiving corticosteroid and antibiotics, eye drops) They will also receive alpha interferon 2b, but without the use of mitomycin during surgery) and group B (patients who receive only eye drops of corticosteroids and antibiotics and mitomycin during surgery) will be randomly substituted. The list of block sequences is kept in a sealed letter at the Ophthalmology Research Center, and after permission from the ethics committee to conduct the study, the envelope is opened at the beginning of the study and patients are placed in group A or B based on gradual referrals, Blinding description: The addition of interferon alfa 2 b drop is not explained to the patients. 3 Pterygium. Intervention 1: Intervention group: Intervention group: Aside from the topical Bethamethasone and Antibiotic drops the intervention group will receive topical drops of interferon alfa 2 b (IFN-α2b) drops for 3 months. Intervention 2: Control group: Control group: Patients receiving topical Corticosteroids and Antibiotic drops and mitomycin during surgery. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no more information