Ophthalmic Lens Having Selected Spherochromatic Control and Methods
An aspect of the invention is directed to an ophthalmic lens, comprising at least one optic having at least one aspheric surface, the lens configured such that, when applied to an average eye, for a bandwidth between a wavelength of 656 nm and a wavelength of 486 nm, at a location disposed in a range 0.7 to 1.0 of the normalized clear aperture of the lens, the spherochromatism being less than 25 waves of the center wavelength of the bandwidth. In some embodiments, the lens is multizonal.
1 . An ophthalmic lens, comprising:
at least one optic having at least one aspheric surface, the lens configured such that, when the lens is applied to an average eye, for a bandwidth between a wavelength of 656 nm and a wavelength of 486 nm, at locations disposed in a range 0.7 to 1.0 of the normalized clear aperture of the lens, the spherochromatism is less than 25 waves of the center wavelength of the bandwidth.
2 . The lens of claim 1 , wherein the spherochromatism is less than 20 waves.
3 . The lens of claim 1 , wherein the spherochromatism is less than 10 waves.
4 . The lens of claim 1 , wherein the spherochromatism is less than 1 wave.
5 . The lens of claim 1 , wherein the spherochromatism is less than 0.5 waves.
6 . The lens of claim 1 , wherein the clear aperture of the lens is 6.0 mm.
7 . The lens of claim 1 , wherein the clear aperture of the lens is 5.0 mm.
8 . The lens of claim 1 , wherein the clear aperture of the lens is 4.0 mm.
9 . The lens of claim 1 , wherein the clear aperture of the lens is 3.0 mm.
10 . The lens of claim 1 , wherein the clear aperture of the lens is 2.0 mm.
11 . The lens of claim 1 , wherein the lens is a contact lens.
12 . The lens of claim 1 , wherein the lens is an IOL.
13 . The lens of claim 1 , wherein the lens is a corneal inlay or a corneal onlay.
14 . The lens of claim 1 , wherein the lens has a non-zero amount of spherical aberration for at least one wavelength in the bandwidth.
15 . The lens of claim 14 , wherein the amount of spherical aberration is at least one wave.
16 . The lens of claim 14 , wherein the amount of spherical aberration is at least 2 waves.
17 . The lens of claim 14 , wherein the amount of spherical aberration is at least 5 waves.
18 . The lens of claim 1 , wherein the lens is configured such that for a bandwidth between a wavelength of 700 nm and a wavelength of 400 nm, at locations disposed in a range 0.7 to 1.0 of the normalized clear aperture of the lens, the spherochromatism being less than 25 waves of the center wavelength of the bandwidth.
19 . The lens of claim 1 , wherein the lens provides a polychromatic modulation that is greater than 10% for a test target having a modulation of 100 line-pairs/mm for light in the bandwidth.
20 . The lens of claim 1 , wherein the sag of the aspheric surface is described by
z Schmidt ( r )= z s tan dard ( r )+α 1 r 2 +α 2 r 4 +α 3 r 6 +α 4 r 8 +α 5 r 10 +α 6 r 12 + . . .
where at least one of the coefficients α n is non-zero.
21 . The lens of claim 20 , wherein the lens is described by the addition of at least one odd-powered polynomial term.
22 . The lens of claim 1 , wherein the lens consists of a single optical element.
23 . The lens of claim 1 , wherein the lens comprises at least two optical elements.
24 . The lens of claim 1 , wherein the lens comprises at least two regions, the regions having different nominal focal lengths than one another.
25 . A method of facilitating treatment of spherochromatism in a subject's eye, comprising:
measuring an amount of spherochromatism of the eye; and
selecting an ophthalmic lens to reduce the amount of spherochromatism.
26 . A multizonal ophthalmic lens, comprising:
at least one optic having at least two zones, at least one of the zones having at least one aspheric surface, the at least one zone disposed at least partially in a range 0.7 to 1.0 of the normalized clear aperture of the lens, the at least one zone configured such that, when the lens is applied to an average eye, for a bandwidth between a wavelength of 656 nm and a wavelength of 486 nm, the spherochromatism of the zone is less than 25 waves of the center wavelength of the bandwidth.
27 . The lens of claim 26 , wherein the at least one zone is disposed entirely in a range 0.7 to 1.0 of the normalized clear aperture of the lens.
28 . The lens of claim 26 , wherein the spherochromatism is less than 10 waves.
29 . The lens of claim 26 , wherein the spherochromatism is less than 5 waves.
30 . The lens of claim 26 , wherein the clear aperture of the lens is 6.0 mm.
31 . The lens of claim 26 , wherein the lens is a contact lens.
32 . The lens of claim 26 , wherein the lens is an IOL.
33 . The lens of claim 26 , wherein the lens is a corneal inlay or a corneal onlay.
34 . The lens of claim 26 , wherein the at least one zone has a non-zero amount of spherical aberration for at least one wavelength in the bandwidth.
35 . The lens of claim 34 , wherein the amount of spherical aberration is at least one wave.
36 . The lens of claim 34 , wherein the amount of spherical aberration is at least 2 waves.
37 . The lens of claim 34 , wherein the amount of spherical aberration is at least 5 waves.
38 . The lens of claim 26 , wherein the lens is configured such that for a bandwidth between a wavelength of 700 nm and a wavelength of 400 nm, the at least one zone has spherochromatism that is less than 25 waves of the center wavelength of the bandwidth.
39 . The lens of claim 26 , the at least one zone provides a polychromatic modulation that is greater than 10% for a test target having a modulation of 100 line-pairs/mm for light in the bandwidth.
40 . The lens of claim 26 , wherein the sag of the at least one zone is described by
z Schmidt ( r )= z s tan dard ( r )+α 1 r 2 +α 2 r 4 +α 3 r 6 +α 4 r 8 +α 5 r 10 +α 6 r 12 + . . .
where at least one of the coefficients α n is non-zero.
41 . The lens of claim 40 , wherein the sag of the zone is described by the addition of at least one odd-powered polynomial term.
42 . The lens of claim 41 , wherein the multizonal lens is a multifocal lens and the first and the second zones have different optical powers than one another.
43 . A surgical method, comprising:
providing an ophthalmic lens, comprising at least one optic having at least one aspheric surface, the lens configured such that, when the lens is applied to an average eye, for a bandwidth between a wavelength of 656 nm and a wavelength of 486 nm, at locations disposed in a range 0.7 to 1.0 of the normalized clear aperture of the lens, the spherochromatism being less than 25 waves of the center wavelength of the bandwidth; and
applying the lens to a patient's eye.
44 . The method of claim 43 , wherein the clear aperture is determined by a feature of the eye.
45 . The method of claim 43 , wherein the feature is an iris of the eye.
46 . The method of claim 43 , wherein the maximum clear aperture when applied to the eye is 6 mm.
47 . The method of claim 43 , wherein the maximum clear aperture when applied to the eye is 5 mm.
48 . The method of claim 43 , wherein the maximum clear aperture when applied to the eye is 4 mm.
49 . The method of claim 43 , wherein the lens is an IOL and the step of applying comprises inserting the lens in the patient's eye.
50 . An ophthalmic lens, comprising:
at least one optic having at least one aspheric surface, the lens configured such that, when the lens is applied to an average eye, for a bandwidth between a wavelength of 656 nm and a wavelength of 486 nm, at a location disposed in a range 0.7 to 1.0 of the normalized clear aperture of the lens, the spherochromatism is less than 25 waves of the center wavelength of the bandwidth.