Resumo

BENITEZ CARTAYA, Mireya et al. Posterior aberration comparative study after cataract surgery in the "Ramón Pando Ferrer" Ocular Microsurgery center (2007-2008). Rev Cubana Oftalmol [online]. 2011, vol.24, n.1, pp. 1-14. ISSN 0864-2176.

OBJECTIVE: To compare the visual result in patients operated on of cataract using the Blumenthal and phacoemulsification techniques by measurement of the resultant aberrations. METHODS:A prospective, longitudinal and observational study was conducted to compare the visual result according the resultant aberrations measured by OPD Scan II NIDEK in 30 eyes of patients operated on of cataract by Blumenthal and phacoemulsification techniques in the "Ramón Pando Ferrer" Cuban Institute of Ophthalmology from October, 2007 to February, 2008. Non-parametric tests (Wilcoxon and Mann-Whitney) test were applied and the pre-, post- and intra-groups were compared. RESULTS: The mean age of study patients was of 63 years. The visual acuity with and without postoperative correction improved significantly in both groups. In the case of phacoemulsification there was a better Strehl' index, sensitivity to contrast and less error in wave front. The total, corneal and internal aberrations decreased for both techniques. The phacoemulsification reduced significantly the total aberrations. In the corneal ones there was a great effectiveness in decrease of the slope; in the internal ones there was a significant decrease of total spherical and the total one. CONCLUSIONS: The visual result of these patients was very good in both groups an was superior to those operated on bt means of phacoemulsification.

Palavras-chave : Cataract; phacoemulsification; Blumenthal; intraocular lens; aberrations.

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