Surgical modalities of pterygium are as follows: Simple Excision Through and through excision Excision with cauterization Excision with use of mitomycin c Excision with use of beta radiation  Excision with lamellar keratoplasty Excision with implantation in lower forex Excision with use of C lens Excision with autograft Excision with stem cell graft Excision with amniotic membrane graft Excision with an argon laser Excision with fibrin glue At present excision with autograft and fibrin glue is the operation of choice.