Intraocular lens having extended depth of focus
First Claim
Patent Images
1. An intraocular lens, comprising:
- an optic having an aperture disposed about an optical axis; and
a positioning member coupled to the optic;
the optic comprising;
a first surface and an opposing second surface;
a diffractive multifocal profile disposed on the first surface or the second surface, wherein the diffractive multifocal profile provides a base power and an add power; and
an extended focus mask disposed on at least one of the surfaces, wherein the extended focus mask comprises a diffractive pattern having an add power that is less than or equal to about 1.5 Diopters and wherein the extended focus mask is configured to extend the depth of focus of the base power, the add power, and a range of viewing distances between the base power and the add power.
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Abstract
An ophthalmic lens for providing enhanced or extended depth of focus includes an optic having an aperture disposed about an optical axis. The optic includes a first surface having a first shape and an opposing second surface having a second shape, the first and second surfaces providing, a base power and, in some embodiments an add power. The optic further includes an extended focus mask disposed upon at least one of the first shape and the second shape that is configured to provide the enhanced or extended depth of focus for one or more foci of the optic, as compared to a similar optic not having the extended focus mask.
177 Citations
15 Claims
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1. An intraocular lens, comprising:
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an optic having an aperture disposed about an optical axis; and a positioning member coupled to the optic; the optic comprising; a first surface and an opposing second surface; a diffractive multifocal profile disposed on the first surface or the second surface, wherein the diffractive multifocal profile provides a base power and an add power; and an extended focus mask disposed on at least one of the surfaces, wherein the extended focus mask comprises a diffractive pattern having an add power that is less than or equal to about 1.5 Diopters and wherein the extended focus mask is configured to extend the depth of focus of the base power, the add power, and a range of viewing distances between the base power and the add power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification