Abstract
Purpose: :
To analyze and compare retreatment rates after photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) performed with the Wavelight Allegretto Wave excimer laser and determine preoperative and postoperative risk factors for this occurrence.
Methods: :
Retrospective chart review to identify all patients undergoing PRK and LASIK at Emory Vision from January 2005 through December 2006 by one Surgeon (JBR). Emory University IRB approval was granted for this study. Analysis will compare postoperative visual acuity outcomes, manifest refractions, retreatment rates, visual acuity outcomes after retreatment, and intraoperative or postoperative complications
Results: :
Out of 855 eyes analyzed, only 55 (6.2%) required enhancement procedures. 99.5% of patients improved to an uncorrected visual acuity of at least 20/40 following the initial procedure. The measured variables showed little statistical significance for subsequent enhancements, with the exception of preoperative astigmatism and hyperopia.
Keywords: refractive surgery: comparative studies • refractive surgery