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104. Jahrestagung der Deutschen Ophthalmologischen Gesellschaft 2006
Abstract
Abstract
FR.07.09 How good is the new generation of multifocal intraocular lenses? Mester U.
Department of Ophthalmology, Bundesknappschaft`s hospital Sulzbach/Saar Perfection of the surgical technique and optimizing the image quality with intraocular lenses have led to a growing demand for spectacle independence after cataract surgery. As accommodative lenses do not yet present satisfying alternatives today, the new generation of multifocal intraocular lenses gained increasing interest. There are three newly designed models: Tecnis MF (AMO), Restor (Alcon), and *Acri.LISA (*Acri.Tec).
In contrast to the only multifocal lens which had been implanted in a large number of eyes in the past, the Array IOL (AMO), the new generation of multifocal lenses uses a diffractive optic design, which is combined with a peripheral refractive zone in the Restor. The main advantage of the diffractive system is the independence from pupil size. Also the refractive power for near is enhanced compared to the Array IOL.
A further development is the aspheric optic in the Tecnis MF and the *Arci.LISA which improves contrast vision. The Restor has a apodized diffractive profile to optimize far vision with enlarging pupil size. The peripheral refractive optic zone is dedicated also to distance vision to reduce dysphotopsia under dim lighting conditions. The *Acri.LISA has an unequal light distribution for far and near with a dominance of 65% for the far focus as most patients prioritize distance vision.
Meanwhile results from several clinical studies with these new multifocal lenses are published with excellent, but in part different results. The drawback of photic phenomena with multifocal IOLs  particularly halos  is not yet eliminated but leads to incompatibility in very rare cases only. On the other hand, with all three new multifocal lenses a complete spectacle independence is gained in about 80%.
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