Table of Contents
ISRN Ophthalmology
Volume 2013 (2013), Article ID 210565, 8 pages
http://dx.doi.org/10.1155/2013/210565
Clinical Study

Postkeratoplasty Anterior and Posterior Corneal Surface Wavefront Analysis: Descemet’s Stripping Automated Endothelial Keratoplasty versus Penetrating Keratoplasty

Department of Ophthalmology, Santa Maria della Misericordia University Hospital, Piazzale S. Maria della, Misericordia 15, 33100 Udine, Italy

Received 26 May 2013; Accepted 12 August 2013

Academic Editors: B. V. Bui, M. Nakazawa, and L. Pierro

Copyright © 2013 Maria L. Salvetat et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. To compare the higher-order aberrations (HOAs) due to the anterior and posterior corneal surfaces in patients that underwent either Descemet-stripping-automated-endothelial-keratoplasty (DSAEK) or penetrating keratoplasty (PK) for endothelial dysfunction and age-matched controls. Methods. This retrospective, observational, case series included 28 patients after PK, 30 patients after DSAEK, and 30 healthy controls. A Scheimpflug imaging system was used to assess the HOAs due to the anterior and posterior corneal surfaces at 4 mm and 6 mm optical zones. Total, 3rd and 4th order HOAs were considered. Intra- and intergroup differences were assessed using the Friedman and the Kruskal-Wallis tests, respectively; paired comparisons were performed using Duncan's multiple range test. Results. Total, 3rd and 4th order HOAs due to both corneal surfaces at 4 mm and 6 mm optical zones were significantly higher in the PK group, intermediate in the DSAEK group, and lower in controls ( ). The most important HOAs components in both PK and DSAEK groups were trefoil and coma from the anterior corneal surface ( ) and trefoil from the posterior corneal surface ( ). Conclusions. The optical quality of both corneal surfaces appeared significantly higher after DSAEK than after PK, which can increase the postoperative patient's quality of vision and satisfaction.