Zonal diffractive multifocal intraocular lenses

摘要

#$%^&*AU2008229765B220140605.pdf#####Docket 3354 US ZONAL DIFFRACTIVE MULTIFOCAL INTRAOCULAR LENSES ABSTRACT 5 The present invention generally provides multifocal ophthalmic lenses, e.g., multifocal intraocular lenses, that employ a central refractive region for providing a refractive focusing power and a diffractive region for providing two diffractive focusing powers. In many cases, the refractive focusing power provided by the lens's central 10 region corresponds to a far-focusing power that is substantially equal to one of the diffractive focusing powers while the other diffractive power corresponds to a nearfocusing power. As such, in m:ny cases, the focusing properties of the lenses are dominated by the far-focus ability, especially for small pupil sizes. 1651525.3it0,