Refractive and Corneal Aberrometric Changes After Crescentic Lamellar Wedge Resection in Pellucid Marginal Degeneration

Objective: To evaluate the effectiveness of crescentic corneal lamellar wedge resection for the treatment of pellucid marginal degeneration (PMD) in improving refractive, visual, and corneal aberrometry. Methods: The study included 10 eyes of 10 patients who had undergone corneal lamellar wedge resection for PMD. Pellucid marginal degeneration was diagnosed based on the clinical signs and corneal topography. The corneal aberrometry was evaluated with Sirius corneal topography. Results: The mean follow-up period was 14.1 months (range, 9–24 months). Uncorrected visual acuity was improved in nine eyes and remained unchanged in 1 case, whereas best-corrected visual acuity was improved in all eyes postoperatively. By vector analysis, the overall mean astigmatic drift at the last visit was calculated to be 13.0±6.3 diopters (D). At last visit, significant reductions were found for all aberrometric measurements. However, the differences were not significant for the measurements of trefoil (P=0.189). Conclusions: Corneal lamellar wedge resection is a favorable surgical option for management of PMD, allowing for improved visual acuity, keratometric cylinder, and corneal aberrations.