<title>Influence of chromatic aberration on image quality in pseudophakic eyes with high myopia</title>

Abstract

Both theoretical an experimental results have shown that transversal chromatic aberration (TCA), also called chromatic difference in image position (CDP) in the object space, is the aberration that most deteriorates ocular image quality. In this paper we study the image quality of pseudophakic eyes based on the transversal spherical aberration (TA) and on the TCA. This study has been done from the point of view of geometrical and wave optics. The eye model that we use is a modified version of the whole theoretical eye used by Navarro et al. Using geometrical optics, we calculate the TA and the TCA for plano-convex or concave intraocular lenses (IOLs) and for meniscus IOLs. The loss of image quality and visual acuity increases as the TA and TCA increase. In addition to this, we have calculated the polychromatic modulation transfer functions (MTF) based on point spread functions (PSF) taking into account spherical aberration and defocus coefficients for the same cases. Finally, as regards chromatic and spherical aberrations, we can establish what type of IOL and which bending factor would best improve image quality for a given patient.