Refractional results of LASIK retreatment with wavefront-guided ablation versus standard ablation

Refractional results of LASIK retreatment with wavefront-guided ablation versus standard ablation

Autor Urbano, Andreia Peltier Autor UNIFESP Google Scholar
Nose, Walton Autor UNIFESP Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo Purpose: To evaluate refractive outcomes of wavefront-guided LASIK (Zyoptix, Bausch & Lomb) versus standard LASIK (PlanoScan, Bausch & Lomb) in retreatment of primary LASIK for myopia and myopic astigmatism. Methods: A prospective, randomized trial with paired eye control of 74 eyes from 37 patients who underwent LASIK retreatment was performed. Each patient underwent retreatment using Zyoptix LASIK in 1 eye and Planoscan LASIK in the contralateral eye. A complete ophthalmologic examination was performed, including evaluation of high contrast visual acuity and manifest refraction, with a follow-up of 6 months. Results: Both Zyoptix and Planoscan groups had similar values of high contrast visual acuity, gain and loss of best spectacle-corrected visual acuity, safety and efficacy indexes, percentage of eyes with spherical equivalent within +/- 0,50 D and +/- 1,00 D in the postoperative period of 6 months. in the Zyoptix group, the values of spherical component and spherical equivalent of manifest refraction were more hyperopic than in the Planoscan group in the postoperative periods of 1 week, 1, 3 and 6 months. the predictability of spherical equivalent correction was better for the Zyoptix group than for the Planoscan group at 6 months. Conclusions: Wavefront-guided LASIK with Zyoptix produces superior refractive outcomes than standard LASIK with Planoscan in retreatment of refractive errors after primary LASIK. High contrast visual acuity measures are not sensitive in showing the best technique.
Palavra-chave Refractive errors
Cornea
Keratomileusis
laser in situ
Retreatment
Lasers
Idioma Português
Data de publicação 2008-09-01
Publicado em Arquivos Brasileiros de Oftalmologia. São Paulo: Consel Brasil Oftalmologia, v. 71, n. 5, p. 651-659, 2008.
ISSN 0004-2749 (Sherpa/Romeo, fator de impacto)
Publicador Consel Brasil Oftalmologia
Extensão 651-659
Fonte http://dx.doi.org/10.1590/S0004-27492008000500008
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000273039800008
SciELO S0004-27492008000500008 (estatísticas na SciELO)
Endereço permanente http://repositorio.unifesp.br/handle/11600/30867

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