Piggyback intraocular lens that improves overall vision where there is a local loss of retinal function
First Claim
1. An ophthalmic lens configured to improve vision for a patient'"'"'s eye, the lens comprising:
- an optic with a first surface and a second surface opposite the first surface, the optic having an optical axis that intersects the first and the second surface, wherein the optic when disposed in an eye of a patient is configured to reduce optical errors together with a cornea and an existing lens in the eye of the patient due to at least one of astigmatism or coma for light incident at an oblique angle with respect to an optical axis of the eye of the patient and focused at a peripheral retinal location disposed at a distance from the fovea and at an eccentricity of about 1 degree to about 25 degrees with respect to the fovea in a horizontal or a vertical plane,wherein the first surface or the second surface of the optic is configured as a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface described by at least one of (i) aspheric coefficients having an order greater than or equal to 8, or (ii) at least six Zernike coefficients,wherein a thickness of the optic along the optical axis of the optic is less than 1.0 mm,wherein a refractive power provided by the optic is between −
5.0 Diopter and +5.0 Diopter, andwherein an astigmatic power provided by the optic is between 0.5 Diopter and 6.0 Diopter.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing a piggyback lens which in combination with the cornea and an existing lens in the patient'"'"'s eye redirects and/or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The piggyback lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the piggyback lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the piggyback lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.
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Citations
13 Claims
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1. An ophthalmic lens configured to improve vision for a patient'"'"'s eye, the lens comprising:
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an optic with a first surface and a second surface opposite the first surface, the optic having an optical axis that intersects the first and the second surface, wherein the optic when disposed in an eye of a patient is configured to reduce optical errors together with a cornea and an existing lens in the eye of the patient due to at least one of astigmatism or coma for light incident at an oblique angle with respect to an optical axis of the eye of the patient and focused at a peripheral retinal location disposed at a distance from the fovea and at an eccentricity of about 1 degree to about 25 degrees with respect to the fovea in a horizontal or a vertical plane, wherein the first surface or the second surface of the optic is configured as a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface described by at least one of (i) aspheric coefficients having an order greater than or equal to 8, or (ii) at least six Zernike coefficients, wherein a thickness of the optic along the optical axis of the optic is less than 1.0 mm, wherein a refractive power provided by the optic is between −
5.0 Diopter and +5.0 Diopter, andwherein an astigmatic power provided by the optic is between 0.5 Diopter and 6.0 Diopter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification