Abstract

DO.12.07

Improvements and limitations of multifocal intraocular lenses

Kaymak H., Mester U.
Knappschaft´s Hospital, Department of Ophthalmology, Sulzbach

Objective: The introduction of several improvement resulted in a broader acceptance of multifocal intraocular lenses (MIOL). Actual models of MIOL use aspheric, toric and diffractive optics, combined refractiv/diffractive designs, and lenses with different light distribution for far and near.
Methods: We performed prospective clinical studies with the following MIOLs: Tecnis ZM001, ReSTOR, ReSTOR aspheric, Acri.Lisa, Acri.Lisa toric.
Results: The functional results in terms of uncorrected and corrected visual acuity for far and near and contrast sensitivity were good with all MIOLs investigated, but with slight differences for far and near distance. The majority of patients (80-90%) became independent from spectacles. Almost all patients showed a significant increase of visual function after surgery of the second eye, and most patients showed an delayed improvement of vision up to 6 months. On unsolved drawback of MIOLs are photic phenomena which are more or less present in most cases but do rarely lead to serious complaints. Another problem is the reduced vision in the intermediate distance of bifocal lenses.
Conclusions: The new generation on MIOLs (in fact: bifocal IOLs) offers very satisfying functional results. Photic phenomena and limited visual performance in the intermediate distance have to be explained to the patients preoperatively.

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