J Cataract Refract Surg. 2010 Nov;36(11):1919-24.
Lapid-Gortzak R, van der Linden JW, van der Meulen IJ, Nieuwendaal CP, Mourits MP, van den Berg TJ.
Department of Ophthalmology, Academic Medical Center, University of Amsterdam, The Netherlands. This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
PURPOSE: To compare straylight values before and 3 months after hyperopic laser in situ keratomileusis (LASIK) or laser-assisted subepithelial keratectomy (LASEK) and determine the cause of any change.
SETTING: Private refractive surgery clinic, Driebergen, The Netherlands.
DESIGN: Comparative case series.
METHODS: Straylight (by definition the measure for glare disability) was measured preoperatively and postoperatively with a C-Quant straylight meter and recorded as log(s). The main outcome measures were the difference between postoperative and preoperative straylight values.
MAIN OUTCOME MEASURES: Methodological aspects such as repeatability, systematic differences, and distance to impaired scores, and prevalence of impaired straylight values after refractive surgery using proposed cutoff criteria.
RESULTS: The mean increase in straylight from preoperatively to postoperatively was 0.051 log(s) ± 0.158 (SD) in the LASIK group (39 eyes) and 0.031 ± 0.146 log(s) in the LASEK group (26 eyes). Although neither change was statistically significant, it was clinically significant in some cases. Haze or interface debris was seen in some eyes with increased straylight. The mean postoperative spherical equivalent refraction was -0.05 ± 0.27 diopter.
CONCLUSIONS: Although straylight increased slightly after hyperopic LASIK and LASEK, the increase was not statistically significant. Some eyes with increased straylight had haze or interface debris. The cause of the increased straylight could not be determined in some cases.
Copyright © 2010 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.
PMID: 21029901 [PubMed - indexed for MEDLINE]