BACKGROUNDPterygium is a triangular wing-shaped encroachment of bulbar conjunctival tissue extending to cornea. It is a degenerative and hyperplastic process, in which conjunctiva actively invades the cornea. The aim of this study is to investigate the efficacy of limbal conjunctival autograft in primary and recurrent Pterygium and to report the incidence of recurrence after surgery using conjunctival autograft with autologous blood coagulum. MATERIALS AND METHODSA hospital-based observational study of one-year duration was conducted in 45 patients with pterygia for whom conjunctival autografting was done. Both males and females of age group 20 -60 years were included in the study. Pterygium excision was done and autograft placed on the blood coagulum over bare sclera and patients were followed postoperatively on Day 1, 7, 30 and then every 2 months until six months and was assessed for visual outcome and symptomatic improvement. RESULTSIn this study 16% cases were in age group 20 to 30 years, 33% in 31 to 40 years, 24% in 41 to 50 years and 27% in 51 to 60 years. High incidence was seen in patients working outdoor than indoors (64% versus 36%). Higher incidence was noted in females (64%). Fewer complications noted like granuloma formation in 1 patient and 4 patients developed recurrence. CONCLUSIONAutologous conjunctival grafting is a safe, economical and effective procedure with narrow learning curve. It prevents recurrence of pterygium and reduces the surgical time with fewer postoperative complications. KEYWORDSPterygium Surgery, Autologous Blood, Autograft, Fibrin Glue. HOW TO CITE THIS ARTICLE:Mohandoss SD, Rao KS, Santhosh MT. Conjunctival autograft with autologous blood coagulum in primary and recurrent pterygium-an observational study.