Progressive power intraocular lens, and methods of use and manufacture
First Claim
1. A radial power-progressive lens, comprising:
- a lens surface defined by a continuous aspheric function;
a first region of the lens approximating a first optical regime; and
a second region of the lens approximating a second optical regime;
whereinthe first region comprises a first range of optical power values and the second optical regime comprises a second range of optical power values different from the first range,the first and second regions are radially symmetric and concentric about an optical axis of the lens, the second region being disposed around the first region,the first and second regions are merged by the continuous aspheric lens function such that a power profile of the lens from a center of the lens to a periphery of the lens is continuous,the second region comprises a peripheral zone extending from an inner diameter of the second region to an outer periphery of the lens,the lens surface can be described according to the following equation;
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Accused Products
Abstract
Apparatuses, systems and methods for providing improved intraocular lenses (IOLs), include features for reducing side effects, such as halos, glare and best focus shifts, in multifocal refractive lenses and extended depth of focus lenses. Exemplary ophthalmic lenses can include a continuous, power progressive aspheric surface based on two or more merged optical zones, the aspheric surface being defined by a single aspheric equation. Continuous power progressive intraocular lenses can mitigate optical side effects that typically result from abrupt optical steps. Aspheric power progressive and aspheric extended depth of focus lenses can be combined with diffractive lens profiles to further enhance visual performance while minimizing dysphotopsia effects. The combination can provide an increased depth of focus that is greater than an individual depth of focus of either the refractive profile or the diffractive profile.
355 Citations
35 Claims
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1. A radial power-progressive lens, comprising:
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a lens surface defined by a continuous aspheric function; a first region of the lens approximating a first optical regime; and a second region of the lens approximating a second optical regime;
whereinthe first region comprises a first range of optical power values and the second optical regime comprises a second range of optical power values different from the first range, the first and second regions are radially symmetric and concentric about an optical axis of the lens, the second region being disposed around the first region, the first and second regions are merged by the continuous aspheric lens function such that a power profile of the lens from a center of the lens to a periphery of the lens is continuous, the second region comprises a peripheral zone extending from an inner diameter of the second region to an outer periphery of the lens, the lens surface can be described according to the following equation; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A radial power-progressive lens, comprising:
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a lens surface defined by a continuous aspheric function; a first region of the lens approximating a first optical regime; and a second region of the lens approximating a second optical regime;
whereinthe first region comprises a first range of optical power values and the second optical regime comprises a second range of optical power values different from the first range, the first and second regions are radially symmetric and concentric about an optical axis of the lens, the second region being disposed around the first region, the first and second regions are merged by the continuous aspheric lens function such that a power profile of the lens from a center of the lens to a periphery of the lens is continuous, the first region is configured to generate a different range of power values with respect to the second region, and the first range of power values varies in magnitude from a first peak power near the optical axis to a first peripheral optical power near a boundary of the first region, the peak optical power being higher than the peripheral optical power, and the first range of power values of the first zone respect to the base power varies from approximately 1.75 diopters to approximately 0 diopters.
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35. A radial power-progressive lens, comprising:
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a lens surface defined by a continuous aspheric function; a first region of the lens approximating a first optical regime; and a second region of the lens approximating a second optical regime;
whereinthe first region comprises a first range of optical power values and the second optical regime comprises a second range of optical power values different from the first range, the first and second regions are radially symmetric and concentric about an optical axis of the lens, the second region being disposed around the first region, the first and second regions are merged by the continuous aspheric lens function such that a power profile of the lens from a center of the lens to a periphery of the lens is continuous, the first region is configured to generate a different range of power values with respect to the second region, and the first range of power values varies in magnitude from a first peak power near the optical axis to a first peripheral optical power near a boundary of the first region, the peak optical power being higher than the peripheral optical power, and the first range of power values of the first zone respect to the base power varies from approximately 3.5 diopters to approximately 0 diopters.
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Specification