PMID: 9186439Jun 1, 1997Paper

Comparison of conjunctival autografts, amniotic membrane grafts, and primary closure for pterygium excision

Ophthalmology
P PrabhasawatS C Tseng

Abstract

The purpose of the study is to determine whether amniotic membrane can be used as an alternative to conjunctival autograft after pterygium excision. A prospective study of amniotic membrane grafts (group A) and primary closure (group B) was compared retrospectively with conjunctival autografts (group C) in patients with pterygia. Group A included 46 eyes with primary pterygia and 8 eyes with recurrent pterygia, group B had 20 eyes with primary pterygia, and group C consisted of 78 eyes with primary and 44 eyes with recurrent pterygia. For the above three different surgeries, the amount of tissue removed was estimated from histopathologic analysis, and the result was evaluated by clinical examination. Recurrence, survival analysis, and final appearance were compared. In group A, the recurrence rate was 10.9%, 37.5%, and 14.8% for primary, recurrent, and all pterygia, respectively (mean follow-up, 11 months). These three rates were significantly higher than 2.6%, 9.1%, and 4.9% noted in group C (mean follow-up, 23 months) (P < 0.001, 0.018, and 0.01, respectively). However, the latter recurrence rate was significantly lower than 45% (mean follow-up, 5.2 months) in group B for primary pterygia (P < 0.001). The onset of recurrence ...Continue Reading

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