Ophthalmic lens
First Claim
1. An ophthalmic lens, comprising:
- a biocompatible lens body having a size and shape adapted to be supported in contact with a human eye in the optical path of the eye;
the lens body having an optical portion with anterior and posterior surfaces;
the optical portion having a grooved portion defining a modified echelon lens pattern in at least one of the anterior and posterior surfaces; and
the modified echelon lens pattern including annular zones that are configured so that at least some of the annular zones exhibit optical characteristics that vary circumferentially in order to at least partially correct for astigmatism.
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Accused Products
Abstract
An ophthalmic lens having a size, shape, and composition adapted to be supported by the human eye in the optical path of the eye as an intraocular, contact, or corneal implant lens, includes a biocompatible lens body having a size and shape adapted to be supported by a human eye in the optical path of the eye. An optical portion of the lens body has anterior and posterior surfaces and a grooved portion defining a modified Fresnel or echelon lens pattern in at least one of the anterior and posterior surfaces. The modified echelon lens pattern includes annular zones that are configured so that at least some of the annular zones exhibit optical characteristics that vary circumferentially in order to at least partially correct for astigmatism.
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Citations
32 Claims
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1. An ophthalmic lens, comprising:
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a biocompatible lens body having a size and shape adapted to be supported in contact with a human eye in the optical path of the eye; the lens body having an optical portion with anterior and posterior surfaces; the optical portion having a grooved portion defining a modified echelon lens pattern in at least one of the anterior and posterior surfaces; and the modified echelon lens pattern including annular zones that are configured so that at least some of the annular zones exhibit optical characteristics that vary circumferentially in order to at least partially correct for astigmatism. - 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, 32)
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24. An intraocular lens, comprising:
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a body of transparent, resilient material defining a lens body that can be folded for implantation purposes, the lens body having a size, shape, and composition adapted to be implanted in the eye; an optical portion of the lens body having anterior and posterior surfaces; a grooved portion of the optical portion defining a modified echelon lens pattern in one of the anterior and posterior surfaces; the modified echelon lens pattern including annular zones that are configured so that at least some of the annular zones exhibit optical characteristics that vary circumferentially in order to at least partially correct for astigmatism; and retaining means, including a separate fixation member extending outwardly from the lens body for use in retaining the in the eye.
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25. An ophthalmic lens, comprising:
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a body of transparent, resilient material defining a lens body having, a size, shape, and composition adapted to be supported in contact with a human eye in the optical path of the eye; an optical portion of the lens body having an anterior surface and a posterior surface; a grooved portion of the optical portion defining a modified echelon lens pattern in at least one of the anterior and posterior surfaces; and at least one echelon surface in the modified echelon lens pattern being inclined relative to an optical axis of the lens an amount that varies circumferentially for astigmatism correction purposes.
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26. A method of correcting vision, comprising:
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providing an ophthalmic lens having an echelon lens pattern modified to provide suitable optical characteristics for at least partially correcting for astigmatism; and retaining the ophthalmic lens in contact with the eye in the optical path of an eye. - View Dependent Claims (27, 28, 29, 30)
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31. A method of correcting astigmatic vision, comprising:
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providing an ophthalmic lens having a modified echelon lens pattern defining at least one echelon surface that is inclined relative to an optical axis of the lens an amount that varies at different meridians to provide suitable optical characteristics for at least partially correcting astigmatic vision of an eye; and retaining the ophthalmic lens on the eye in the optical path of the eye.
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Specification