Ophthalmic devices, systems, and methods for optimizing peripheral vision
First Claim
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1. A method of optimizing peripheral vision, comprising:
- determining one or more physical and/or optical properties of a retina;
selecting an IOL based on the one or more physical properties of the retina, wherein the IOL is rotationally symmetric about an axis intersecting the retina at the fovea when implanted in an eye of a patient, the IOL having an anterior surface and a posterior surface, the IOL being configured to receive ambient light refracted from the cornea of the eye, the IOL configured to focus at least a portion of on-axis incident light at a spot in a peripheral location of the retina that is spaced away from the foveal region of the retina; and
selecting an axial position of the IOL such that the anterior surface of the IOL is positioned at a distance greater than about 2.5 mm and less than about 3.5 mm behind the iris of the eye having regular dimensions, the selected axial position of the IOL configured to optimize optical quality at the spot in the peripheral location of the retina to be less than or equal to a peripheral threshold MTF at the spot in the peripheral location of the retina, the peripheral threshold MTF being dependent on one or more physical and/or optical properties of the retina.
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Abstract
The present invention relates to devices, systems, and methods for optimizing peripheral vision. In particular, methods are disclosed which include utilizing particular characteristics of the retina in optimizing peripheral vision. Additionally, various IOL designs, as well as IOL implantation locations, are disclosed which optimize peripheral vision.
197 Citations
15 Claims
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1. A method of optimizing peripheral vision, comprising:
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determining one or more physical and/or optical properties of a retina; selecting an IOL based on the one or more physical properties of the retina, wherein the IOL is rotationally symmetric about an axis intersecting the retina at the fovea when implanted in an eye of a patient, the IOL having an anterior surface and a posterior surface, the IOL being configured to receive ambient light refracted from the cornea of the eye, the IOL configured to focus at least a portion of on-axis incident light at a spot in a peripheral location of the retina that is spaced away from the foveal region of the retina; and selecting an axial position of the IOL such that the anterior surface of the IOL is positioned at a distance greater than about 2.5 mm and less than about 3.5 mm behind the iris of the eye having regular dimensions, the selected axial position of the IOL configured to optimize optical quality at the spot in the peripheral location of the retina to be less than or equal to a peripheral threshold MTF at the spot in the peripheral location of the retina, the peripheral threshold MTF being dependent on one or more physical and/or optical properties of the retina. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of optimizing peripheral vision, comprising:
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determining one or more physical and/or optical properties of a retina; selecting an IOL based on the one or more physical properties of the retina, wherein the IOL is rotationally symmetric about an axis intersecting the retina at the fovea when implanted in an eye of a patient, the IOL having an anterior surface and a posterior surface, the IOL being configured to receive ambient light refracted from the cornea of the eye and focus at least a portion of on-axis incident light at a non-foveal region of the retina; and selecting an axial position of the IOL such that the anterior surface of the IOL is positioned between about 3.5 mm and 4.5 mm behind the iris of the eye having regular dimensions that optimizes optical quality at the non-foveal region of the retina to be less than or equal to a peripheral threshold MTF at the non-foveal region of the retina, the peripheral threshold MTF being dependent on one or more physical and/or optical properties of the retina. - View Dependent Claims (9, 10, 11, 12)
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13. A multifocal IOL for optimizing peripheral vision comprising:
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an optic comprised of at least two zones with each zone producing a focused image centered around a different part of the retina and wherein each zone has essentially the same dioptric power, the two zones including an inner zone and an outer zone, wherein the inner zone is spherical for focusing an image at the foveal region of retina and the outer zone comprises a spherical lens combined with a prism for focusing an image at a spot spaced away from the foveal region of the retina, the inner and the outer zone being connected by a transition zone having a step height value in a range between about 0.5 microns and about 4 microns, and wherein the optic is configured to reduce peripheral astigmatism. - View Dependent Claims (14, 15)
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Specification