Design and Evaluation of Refractive Multifocal Intraocular Lenses Implanted within the Human Eye

Abstract

In this paper, optimum design of three classic model have been proposed, for refractive multifocal intraocular lenses (singlet, doublet, triplet-MIOLs) implanted within human eye (Liou & Brennan model). The analysis were carried out with ZEMAX-EE optical software through the polychromatic functions; MTF, PSF, spot diagram and (longitudinal-, Sphero-) chromatic aberration in addition to comparison with healthy eye. Due to good biocompatibility, AR40N Allergan and AcrySof SA60AT were used to design refractive MIOLs in unique and / or dual combination. Correction of the spherical aberration and longitudinal chromatic aberration (LCA) within 5 of visual field and 4 mm of pupil diameter were performed over the spectral region (455-655 nm). Result indicate that for all MIOLs proposed design (pseudophakic eye) sharp vision was achieved for a set of distances within range (25-108cm) but still much less than in healthy eye and pseudophakic eye with triplet-MIOLs implanted was the best model.