Toric intraocular lens with modified power characteristics
First Claim
1. A tonic ophthalmic lens comprising an optical element, the optical element having meridians associated therewith, including a high power meridian and a low power meridian orthogonal to the high power meridian, the optical element having at least one radially modulated meridian along which power monotonically and strictly varies in a continuous manner with increasing radial position along the entire radially modulated meridian.
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Accused Products
Abstract
An intraocular lens for correcting or reducing the astigmatism of a cornea includes an optical element that has optical properties and characteristics that make it tolerant of rotational misalignment, when compared to a comparable lens having a uniform astigmatism orientation across its entire optical element, leading to more relaxed tolerances for a surgeon that implants the lens. The optical element of the toric ophthalmic lens has meridians associated therewith, including a high power meridian and a low power meridian orthogonal to the high power meridian. The optical element has at least one radially modulated meridian along which power monotonically varies with increasing radial position.
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Citations
14 Claims
- 1. A tonic ophthalmic lens comprising an optical element, the optical element having meridians associated therewith, including a high power meridian and a low power meridian orthogonal to the high power meridian, the optical element having at least one radially modulated meridian along which power monotonically and strictly varies in a continuous manner with increasing radial position along the entire radially modulated meridian.
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8. A tonic ophthalmic lens comprising an optical element, the optical element having meridians associated therewith, including a high power meridian and a low power meridian orthogonal to the high power meridian, the power varying with increasing radial position,
wherein along the high power meridian: -
between an originating position and a respective first radial position, power equals a respective nominal power; between the respective first radial position and a respective second radial position, power is greater than the respective nominal power; and between the respective second radial position and a respective third radial position, power is less than the respective nominal power; wherein the power between the originating position and the respective third radial position monotonically varies in a continuous manner, such that the power monotonically and strictly varies with increasing radial position along an entire length of the high power meridian. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification