Background: Assessment of efficiency and safety of two surgical methods for treatment of extended pterygium. Materials and method: This work describes a retrospective survey performed on 48 patients, divided in two groups: Group 1, comprising 24 patients, undergoing excision of pterygium and conjunctival autoplasty and Group 2, comprising 24 patients, undergoing excision of pterygium, conjunctival autoplasty and grafting with amniotic membrane. Patients underwent surgery during January 2009 – December 2013, with a follow-up period between 6 months and 24 months. Checks were made for occurrence of relapse, type and incidence of complications. Results: Relapse occurred in 2 cases within Group 1 (8.3%) and in 2 cases within Group 2(8.3%) Complications: In Group 1, graft shifting was observed in two cases, occurrence of perilimbal corneal ulcer in two cases and dehiscence of conjunctival suture in one case. (20,8%) In Group 2, only one case was detected with occurrence of dehiscence of conjunctival wound (4,1%) Conclusions: Grafting with amniotic membrane reduced the number of post-surgery complications after excision of extended pterygium