Patent ID: 6221105
Filing Date: 2001-04-24
Classification: A61F

Abstract:
A multifocal ophthalmic lens for providing vision correction power, the multifocal ophthalmic lens having an outer periphery and a baseline diopter power for far vision correction, the multifocal ophthalmic lens being adapted to be implanted in an eye or to be disposed in a cornea, and comprising:a central zone having a vision correction power approximately equal to or greater than the baseline diopter power, the central zone having a progressive power region in which the vision correction power varies progressively;a first zone having a near vision correction power, the first zone being located radially outwardly of the central zone; anda second zone located radially outwardly of the first zone and extending to the outer periphery of the multifocal ophthalmic lens and having a vision correction power less than the baseline diopter power substantially throughout the second zone, the vision correction power at the outer periphery of the multifocal ophthalmic lens being equal to the baseline optical power.