Evaluation of Efficacy of Pterygium Excision on Ocular Higher-order Aberrations

Pterygium causes visual disturbance due to ocular surface irregularity. The convenient method to investigate this irregularity is measurement of ocular aberration. The aim of this study to investigate the impact of pterygium excision with conjunctival autograft together with corneal polishing on ocular higher-order aberrations (HOAs).
This study was performed on 34 patients with primary nasal pterygium who had an indication for surgical excision in November 2013. All patients underwent a detailed ophthalmologic examination preoperatively and at the third postoperative months. Pterygium excision was performed by the same surgeon. Corneal topography and ocular higher-order aberration were measured by ITRACE.
Numerous parameters including mean value cylinder and spherical refractive error, visual acuity, root mean square values of total HOAs were found to be significantly improved at 3 month after pterygium surgery. There was significant difference between preoperative and postoperative mean refractive cylinder (- 6.77 ±1.08 diopter (D) vs. 2.25 ± 0.34 diopter (D), respectively, P Pterygium excision can significantly improve visual acuity and most of the pterygium-induced HOAs.