| 摘要 |
A multifocal intraocular lens 'IOL' comprises an optic having an optical centre and an optical axis through the optical centre, the IOL optic comprising a first portion having a first refractive index and a second portion having a second refractive index. The first and second portions are contiguous with one another and are non-circularly symmetric about the optical axis. The first refractive index is different than the second refractive index so as to provide different refractive powers for the first and second portions, and thereby multifocal capability. Also provided is a method of manufacture of the multifocal IOL. |
