SciELO - Scientific Electronic Library Online

vol.71 número5Incorporação e diferenciação retiniana de células tronco mesenquimais intravítreas em ratosPressão intra-ocular em pacientes esquizofrênicos tratados com medicações psiquiátricas índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Arquivos Brasileiros de Oftalmologia

versão impressa ISSN 0004-2749
versão On-line ISSN 1678-2925


URBANO, Andréia Peltier  e  NOSE, Walton. Refractional results of LASIK retreatment with wavefront-guided ablation versus standard ablation. Arq. Bras. Oftalmol. [online]. 2008, vol.71, n.5, pp.651-659. ISSN 0004-2749.

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.

Palavras-chave : Refractive errors; Cornea; Keratomileusis, laser in situ; Retreatment; Lasers.

        · resumo em Português     · texto em Português     · Português ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons