The Tecnis Multifocal Lens

The Tecnis Multifocal lens is similar in design to the ReStor, but there are differences. These are analogous to the differences between blended , progressive and Varilux multifocal (spectacle) lenses. The Tecnis lens has its multifocal optic on the rear lens surface, whereas the ReStor lens has its multifocal designed on the front surface.  There are very subtle differences in the ratio of near-, intermediate- and distance-focusing proportions of these lenses and in their edge design. Clinical studies have shown that the Tecnis lens affords excellent distance, intermediate and near vision in a high majority of patients, whereas the ReStor affords excellent distance and close focus clarity, but less clarity at the intermediate range.  All multifocal lens implants will cause some amount of light scattering compared to Crystalens or single-focus lenses.  Multifocal lenses will also create some glare and halo around point sources of light, especially at night, which is why their use is not enthusiastically recommended for pilots and commercial drivers.  Any multifocal lens will cause some light scattering and glare due to the zones of different focus; this is unavoidable.