IOL Peripheral Surface Designs to Reduce Negative Dysphotopsia
First Claim
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1. An intraocular lens (IOL), comprising:
- an anterior optical surface and a posterior optical surface disposed about an optical axis, said posterior surface having a central region extending to a peripheral region,wherein the anterior surface and said central region are adapted to cooperatively form an image of a field of view on the retina and said peripheral region is adapted to direct some light rays incident on the anterior surface to at least one retinal location offset from said image so as to inhibit perception of visual artifacts in a peripheral visual field.
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Abstract
An IOL is disclosed that includes an anterior surface and a posterior surface disposed about an optical axis, where the posterior surface includes a central region extending to a peripheral region. Once the IOL is implanted in a patient'"'"'s eye, the anterior surface and the central region of the posterior surface cooperatively form an image of a field of view on the retina and the peripheral region of the posterior surface directs at least some light rays incident thereon (e.g., via refraction by the anterior surface) to at least one retinal location offset from the image so as to inhibit dysphotopsia.
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Citations
31 Claims
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1. An intraocular lens (IOL), comprising:
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an anterior optical surface and a posterior optical surface disposed about an optical axis, said posterior surface having a central region extending to a peripheral region, wherein the anterior surface and said central region are adapted to cooperatively form an image of a field of view on the retina and said peripheral region is adapted to direct some light rays incident on the anterior surface to at least one retinal location offset from said image so as to inhibit perception of visual artifacts in a peripheral visual field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An intraocular lens (IOL), comprising:
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an anterior surface and a posterior surface, said posterior surface having a central region extending to a peripheral region, wherein said anterior surface and said central region of the posterior surface cooperatively provide multiple focusing powers and said peripheral region of the posterior surface is adapted to direct at least some light rays incident thereon to a retinal location between an image formed by the anterior surface and the central portion of the posterior surface and a second peripheral image formed by light rays entering the IOL that miss the IOL so as to inhibit the perception of peripheral visual artifacts.
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15. An intraocular lens (IOL), comprising:
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a) an anterior optical surface and a posterior optical surface disposed about an optical axis; and b) an annular peripheral surface at least partially surrounding said posterior surface, said anterior surface and said posterior surface cooperatively providing a principal focusing power for generating an image of a field of view on the retina of a patient'"'"'s eye in which the IOL is implanted, wherein said peripheral annular surface is adapted to direct, in combination with said anterior surface, some light rays incident on the anterior surface to the retina with a secondary focusing power less than said principal power so as to inhibit perception of visual artifacts in a peripheral visual field. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. An intraocular lens (IOL), comprising:
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a) an anterior optical surface and a posterior optical surface disposed about an optical axis; and b) a annular focusing surface surrounding said posterior surface, wherein said annular focusing surface is adapted to inhibit perception of peripheral visual artifacts once the IOL is implanted in a patient'"'"'s eye. - View Dependent Claims (23, 24, 25, 26, 27)
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28. An intraocular lens (IOL), comprising:
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a) an optic having an interior surface and a posterior surface; and b) one or more focusing elements at least partially surrounding the posterior surface for directing light to the retina so as to inhibit perception of visual artifacts in a peripheral visual field. - View Dependent Claims (29)
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30. A method of correcting vision, comprising the steps of:
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a) providing an intraocular lens (IOL) for implantation in a patient'"'"'s eye, said IOL comprising an anterior optical surface and a posterior optical surface disposed about an optical axis, said posterior surface comprising a peripheral annular focusing region that is adapted to inhibit dysphotopsia; and b) implanting said IOL in a patient'"'"'s eye. - View Dependent Claims (31)
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Specification