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Double-pass system analysis of the visual outcomes and optical performance of an apodized diffractive multifocal intraocular lens.

Tipo: Artículo
Autores: Moreno LJ, Piñero DP, Alió JL, Fimia A, Plaza AB.
Títuto Revista: Journal of cataract and refractive surgery
Referencia:
Centro: 14 - IOA - UMH
J Cataract Refract Surg. 2010 Dec;36(12):2048-55.

Double-pass system analysis of the visual outcomes and optical performance of an apodized diffractive multifocal intraocular lens.

Source

Instituto Oftalmológico de Alicante, Universidad Miguel Hernández, Alicante, Spain. ljmoreno@vissum.com

Abstract

PURPOSE:

To evaluate the postoperative ocular optical quality using a double-pass method and assess visual outcomes in eyes with an apodized multifocal intraocular lens (IOL) and to correlate the findings with IOL power.

SETTING:

Vissum Corporation, Alicante, Spain.

DESIGN:

Case series.

METHODS:

This study evaluated eyes that had cataract surgery with implantation of an AcrySof ReSTOR SN6AD3 multifocal IOL. Near and far visual acuities were measured postoperatively at 1 month and 6 months. Ocular optical quality was assessed at 1 month using a double-pass system (Optical Quality Analysis System), and the point-spread function (PSF) and modulation transfer function (MTF) were characterized.

RESULTS:

The study included 38 eyes of 19 patients with a mean age of 63.4 years ± 8.4 (SD). The improvements in uncorrected distance visual acuity (from 0.57 ± 0.31 logMAR preoperatively to 0.11 ± 0.13 logMAR 1 month postoperatively and 0.11 ± 0.12 logMAR at 6 months) were statistically significant (P<.00001), as were the improvements in uncorrected near visual acuity (0.76 ± 0.40 logMAR preoperatively to 0.21 ± 0.11 logMAR and 0.12 ± 0.09 logMAR, respectively) (P<.00001). The IOL power correlated significantly with PSF width (r = 0.57, P = .017) and the MTF cutoff frequency (r = -0.36, P = .05). Furthermore, the lower the IOL power, the better the near and distance visual acuities, especially 1 month postoperatively.

CONCLUSION:

The apodized multifocal IOL restored distance and near visual function, although IOL power was a limiting factor to the final visual outcomes and optical quality.

Crown Copyright © 2010. Published by Elsevier Inc. All rights reserved.

PMID: 21111306 [PubMed - indexed for MEDLINE]