Document Detail


Refractive lenticule extraction (ReLEx flex) and wavefront-optimized Femto-LASIK: comparison of contrast sensitivity and high-order aberrations at 1 year.
MedLine Citation:
PMID:  23212799     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIM: To compare 1-year results of the refractive lenticule extraction (ReLEx) flex technique performed as a commercial bilateral simultaneous procedure to a matched group of wavefront-optimized Femto-Lasik for correction of myopia and astigmatism with emphasis on contrast sensitivity and high-order aberrations (HOA). METHODS: In this retrospective study 44 eyes of 22 patients with spherical equivalent (SE) of -5.13 D who underwent ReLEx were matched to 50 eyes of 25 patients with SE of -5.42 D treated by wavefront-optimized Femto-Lasik. We used Carl Zeiss Meditec (CZM) VisuMax(®) femtosecond laser system with a 200 kHz repetition rate. In addition, for Femto-LASIK, MEL 80 Excimer Laser (CZM) with aspheric ablation profiles was used for ablation. RESULTS: At 1 year, the mean SE in the ReLEx group was -0.23 ± 0.35 D and in the Femto-LASIK group -0.15 ± 0.27 D. The mesopic contrast sensitivity of ReLEx treated eyes at 12 and 18 cpd improved from 1.49 and 0.99 to 1.54 and 1.1 respectively. In the Femto-LASIK group the numbers were pre-op 1.51 and 1.03, and after 1 year 1.54 and 1.06. The high-order aberrations (HOA) after ReLEx changed from 0.15 to 0.23 μm, and after Femto-LASIK from 0.175 to 0.320 μm (p = 0.0023). CONCLUSION: At 1 year, wavefront-optimized Femto-LASIK produced similar refractive outcomes to ReLEx(®) flex with better, but non-significant accuracy. In contrast, ReLEx(®) flex showed significantly less induction of HOA and better mesopic mid-term contrast sensitivity then the wavefront-optimized Femto-LASIK.
Authors:
Jana Gertnere; Igor Solomatin; Walter Sekundo
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-5
Journal Detail:
Title:  Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie     Volume:  -     ISSN:  1435-702X     ISO Abbreviation:  Graefes Arch. Clin. Exp. Ophthalmol.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8205248     Medline TA:  Graefes Arch Clin Exp Ophthalmol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Solomatin Eye Clinic, Riga, Latvia.
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