The study included 40 eyes of 20 patients (16 females, 4 males), with a mean age of 56.10☖.8 years (range 48–67 years) undergoing cataract surgery with implantation of the diffractive 1-piece IOL Tecnis ZMB00 in 1 eye and 3 weeks later in the other eye. The aim of the current study was to evaluate binocular visual outcomes, including the analysis of intermediate visual function, with this diffractive multifocal IOL at 3 and 6 months after surgery. To date, the results of 2 reported studies have shown that this type of multifocal IOL is able to provide excellent objective and subjective results, with effective restoration of near and distance visual function. The additive effects of different optical design elements contribute to contrast loss in pseudophakic eyes implanted with different aspheric IOLs (presented at the XXVII Congress of the ESCRS, Barcelona, 2009).
Furthermore, chromatic dispersion induced by this relatively new IOL is low and can result in an improvement in contrast sensitivity of up to 12% in comparison with other IOLs made of hydrophobic acrylic materials (e.g., Zhao H, Piers PA, Mainster MA). Specifically, the aspheric surface of this IOL induces a controlled amount of negative spherical aberration that compensates for the positive spherical aberration usually present in the cornea. This IOL is CE-marked and obtained FDA approval in 2010. One relatively new design of multifocal IOL is the 1-piece IOL Tecnis ZMB00 (Abbott Medical Optics), which combines diffractive and aspheric optics. Refractive, diffractive, and hybrid apodized (refractive/diffractive) multifocal IOLs are currently available for clinical use. This can be achieved by implanting specific models of multifocal intraocular lenses (IOLs). The goal of modern cataract surgery is not only to remove the opacified lens, but also to restore visual function at various distances.
0 kommentar(er)
