Aspheric lenses and lens family
First Claim
1. An intraocular lens, comprising:
- a lens body having anterior and posterior surfaces with at least one of the surfaces having an aspheric surface such that transmission of a wavefront of light through the lens results in the introduction of substantially no additional spherical aberration to the wavefront.
3 Assignments
0 Petitions
Accused Products
Abstract
An aspheric IOL for use in an ocular system has no inherent spherical aberration. An aspheric IOL for use in an ocular system has a controlled amount of inherent negative spherical aberration such that the IOL induces no spherical aberration in a converging wavefront. The amount of negative spherical aberration is less than an amount necessary to counter balance the positive spherical aberration of the cornea. A family of aspheric IOLs made up of any two or more individual aspheric IOLs having different spherical aberration values and different lens shape factors. A lens constant, such as the A-constant, is kept constant throughout the family of lenses. In an aspect, the A-constant of a child-family of aspheric IOLs matches the A-constant of a parent-family of spherical IOLs. A method for designing a family of aspheric IOLs.
171 Citations
80 Claims
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1. An intraocular lens, comprising:
a lens body having anterior and posterior surfaces with at least one of the surfaces having an aspheric surface such that transmission of a wavefront of light through the lens results in the introduction of substantially no additional spherical aberration to the wavefront. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An intraocular lens having an aspheric corrective surface that substantially avoids introduction of spherical aberration to a wavefront transmitted there through.
- 10. An intraocular lens having at least one aspheric surface with a conic constant less than zero, said lens having a correction to substantially avoid spherical aberration of light transmitted there through.
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14. An aspheric intraocular lens, comprising:
an optical lens body having first and second opposing surfaces for transmitting light through the lens body to a desired focal region, with at least one of said first and second surfaces having a reduced SAG to substantially correct the lens for spherical aberration in the visible spectrum. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An intraocular lens (IOL), consisting of:
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an aspheric anterior surface having an apical radius of curvature, Ra, and an anterior surface conic constant, ka;
an aspheric posterior surface having an apical radius of curvature, Rp, and a posterior surface conic constant, kp, wherein the ratio of ka;
kp is constant for all radii, and the lens has negative inherent spherical aberration. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A pseudophakic IOL, characterized by:
an aspheric lens surface shape, wherein the lens induces between about −
0.13μ
to −
0.07μ
of spherical aberration to a converging wavefront incident upon and refracted by the lens.- View Dependent Claims (30)
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31. An aspheric lens for use in an optical system having an optical axis, the system including a focusing optical element disposed on an object side of the lens, comprising:
an anterior surface and an opposing posterior surface, designed so that the lens induces no spherical aberration in a converging wavefront propagating from the focusing optical element through the lens, wherein the converging wavefront is produced from a wavefront at optical infinity incident on the focusing optical element along the optical axis. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A family of aspheric IOLs, comprising:
a plurality of individual aspheric IOLs each having a lens power value and a different value of inherent spherical aberration (SA), wherein each of the lenses is characterized by a lens constant that is the same for the plurality of lenses, further wherein each lens has a lens shape factor that is different for the plurality of lenses. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. A method for designing a family of aspheric IOLs including a plurality of individual aspheric IOLs each having a lens power and a different value of inherent spherical aberration (SA), wherein each of the IOLs is characterized by a lens constant and a lens shape factor, comprising:
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determining a lens constant that is the same for each of the plurality of IOLs; and
providing a lens shape factor that is different for each of the plurality of IOLs. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80)
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Specification