Custom selection of aspheric intraocular lens in eyes with previous hyperopic corneal surgery

Journal of Cataract and Refractive Surgery
Li WangDouglas D Koch

Abstract

To determine the optimum amount of spherical aberration in intra-ocular lenses (IOLs) to maximize optical quality in eyes with previous hyperopic corneal surgery. Cullen Eye Institute, Baylor College of Medicine, Houston, Texas. Theoretical simulation study. The amount of spherical aberration in the IOL was varied to produce residual ocular spherical aberration ranging from -0.50 to +0.50 μm. With the use of the Zernike Tool Program, the polychromatic point-spread function with Stiles-Crawford effect was calculated for 6.0 mm and 4.0 mm pupils and defocus of 0.00 diopter (D), -0.50 D, and +0.50 D. The IOL spherical aberration at which maximum image quality was achieved was determined. Stepwise multiple regression analysis was performed to assess the predictors of optimum IOL spherical aberration. Aspheric IOL implantation was simulated in 106 eyes of 80 patients; ages ranged from 40 to 59 years. With 0.00 D, -0.50 D, and +0.50 D defocus, respectively, the ranges of 25th to 75th percentiles of the optimum IOL spherical aberration were -0.12 to +0.20 μm, +0.10 to +0.42 μm, and -0.35 to -0.03 μm for the 6.0 mm pupil and -0.14 to +0.26 μm, +0.41 to +0.86 μm, and -0.74 to -0.24 μm for the 4.0 mm pupil. The amount of optimum IOL sphe...Continue Reading

References

Sep 5, 2003·Journal of Cataract and Refractive Surgery·Raymond A ApplegateEdwin J Sarver
Sep 5, 2003·Journal of Cataract and Refractive Surgery·Li WangArif Nathoo
Oct 3, 2003·Journal of Cataract and Refractive Surgery·Li Wang, Douglas D Koch
Nov 24, 2004·Investigative Ophthalmology & Visual Science·Patricia A PiersPablo Artal
May 16, 2006·Vision Research·J S McLellanS A Burns
Jun 9, 2006·Applied Optics·Guang-Ming Dai
Sep 25, 2007·Journal of Cataract and Refractive Surgery·Li Wang, Douglas D Koch
Sep 25, 2007·Journal of Cataract and Refractive Surgery·Patricia A PiersPablo Artal
Feb 27, 2008·Journal of Cataract and Refractive Surgery·Jorge L AlióMaría José García Corral
Dec 9, 2008·American Journal of Ophthalmology·Antonio BenitoPablo Artal
Feb 28, 2009·Journal of Refractive Surgery·Mark PackerRichard S Hoffman
Feb 2, 2010·Journal of Cataract and Refractive Surgery·Li WangDouglas D Koch

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