Abstract

To introduce a novel approach for pterygium excision, to report recurrence rates, and to compare with conjunctival autografting. A comparative, prospective clinical case series design was used. The study population consisted of 155 patients with unilateral primary or recurrent pterygia. All patients underwent pterygium excision, either by conventional conjunctival autografting (Group A) or by the minimally invasive pterygium excision (MIPE) technique (Group B). The new technique involves making a limbal incision of the conjunctiva through the body of pterygium, removing the head of the pterygium by blunt dissection, keeping the adjacent Tenon capsule intact, and performing a small conjunctival autograft to cover the epithelial defect. The recurrence rate of each technique was compared statistically. There were 84 patients in Group A and 71 patients in Group B. The recurrence rates were 18% at 1 year after surgery in the conjunctival autografting technique and 4.2% in the MIPE technique. The MIPE technique had significantly lower recurrence rates compared with conjunctival autografting technique (p<0.0001). The MIPE technique had lower recurrence rate and fewer postoperative complications than the conjunctival autografting technique. Preserving the Tenon capsule and minimizing conjunctival excision in pterygium surgery does not appear to increase the recurrence rate in the 1- year period. However, the effectiveness of this technique in preventing recurrences needs to be proven with more than 1-year results, which we plan to report in the future.

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