Document Detail


Wavefront optimized versus custom-Q treatments in surface ablation for myopic astigmatism with the WaveLight ALLEGRETTO laser.
MedLine Citation:
PMID:  18856231     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To compare treatments with wavefront optimized and custom-Q ablations. METHODS: Two consecutive groups of eyes were treated for myopia and astigmatism with surface ablation. One group was treated with wavefront optimized ablation and the second group was treated with custom-Q ablation. Preoperative and 3-month postoperative Q-values, higher order aberrations, low contrast visual acuity, and classic outcome parameters were analyzed. RESULTS: The wavefront optimized ablation group was comprised of 46 eyes of 23 patients with a mean spherical equivalent refraction (SE) of -3.64 diopters (D) (range: -1.15 to -8.25 D); mean Q-value changed from -0.33 preoperatively to 0.06 postoperatively. The custom-Q ablation group was comprised of 42 eyes of 21 patients with a mean SE of -3.24 D (range: -1.47 to -8.00 D); mean Q-value changed from -0.36 preoperatively to -0.03 postoperatively. A statistically significant difference in postoperative change in Q-values (P = .049) between the two groups was noted, but there was no such difference in higher order aberrations, low contrast visual acuity, or classic outcome parameters. CONCLUSIONS: Custom-Q ablation resulted in a mean postoperative asphericity that was closer to preoperative compared to wavefront optimized ablation, whereas the other outcome parameters showed no statistically significant differences.
Authors:
Aleksandar Stojanovic; Ling Wang; Mirko R Jankov; Tore A Nitter; Qinmei Wang
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of refractive surgery (Thorofare, N.J. : 1995)     Volume:  24     ISSN:  1081-597X     ISO Abbreviation:  J Refract Surg     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-10-16     Completed Date:  2008-10-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9505927     Medline TA:  J Refract Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  779-89     Citation Subset:  IM    
Affiliation:
Eye Department, University Hospital of North Norway and SynsLaser Kirurgi, Tomsø, Norway. aleks@online.no
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MeSH Terms
Descriptor/Qualifier:
Adult
Astigmatism / physiopathology,  surgery*
Contrast Sensitivity / physiology
Cornea / physiopathology,  surgery
Corneal Topography
Female
Humans
Keratomileusis, Laser In Situ / methods*
Lasers, Excimer / therapeutic use*
Male
Middle Aged
Myopia / physiopathology,  surgery*
Nomograms
Retrospective Studies
Visual Acuity / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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