Pterygium is a wing‑shape fibrovascular lesion of the ocular surface, which is associated with chronic sunlight exposure. As pterygium progress, decreased vision, discomfort and restricted ocular motility can result. Until now, a wide spectrum of treatment strategies have been described for pterygium treatment, including pterygium excision with bare sclera, conjunctival autograft, amniotic membrane transplantation (AMT), adjunctive use of mitomycin‑C.
Pterygium excision followed by conjunctival autograft has been shown to be a safe and effective procedure for pterygium, with recurrence rates ranging from 2% to 39%.
Various suture materials and techniques are employed to secure the autograft, including absorbable and non-absorbable sutures of different diameters.
A prospective, randomized, controlled, clinical trial will conducted, in which 50 eyes of 50 patients with primary nasal pterygium will randomized to undergo pterygium surgery with the use of nylon sutures or silk sutures for conjunctival autograft suturing. Patients will followed up for 6 months. Outcome measures included postoperative discomfort according to a visual analogue scale (VAS), graft dehiscence, graft edema, suture loosening and recurrence. All remaining sutures will removed 2 weeks postoperatively.