INTRAOCULAR LENS WITH EDGE MODIFICATION
Intraocular lenses (IOLs) with modified edge characteristics are disclosed to inhibit transverse propagation of internally reflected light rays in order to alleviate, and preferably eliminate, dysphotopsia and/or the perception of dark shadows reported by some users. In one embodiment, IOL designs are disclosed that incorporate an opaque edge or other mechanisms for capturing internally reflected peripheral light rays. In other embodiments, the peripheral region can include a light scattering material or can have a disproportional thickness or be contoured to redirect peripheral rays.
1 . An intraocular lens (IOL), comprising
an optic with at least one peripheral region adapted to inhibit transverse propagation of internally reflected light rays.
2 . The IOL of claim 1 , wherein the IOL further comprises an optic body with a peripheral region that incorporates a light absorbing material.
3 . The IOL of claim 1 , wherein the IOL further comprises an opaque coating on at least a portion of a peripheral region of the optic.
4 . The IOL of claim 1 , wherein the IOL further comprises an opaque coating on at least a portion of an edge, a posterior surface or an anterior surface of the peripheral region of the optic.
5 . The IOL of claim 1 , wherein the IOL further comprises a light scattering composition on or within at least a portion of the peripheral region of the optic.
6 . The IOL of claim 5 , wherein the light scattering composition is a coating on at least a portion of the peripheral region of the optic.
7 . The IOL of claim 5 , wherein the light scattering composition is incorporated into at least a portion of the peripheral region of the optic.
8 . The IOL of claim 1 , wherein the IOL further comprises a compound curved surface on at least a portion of the peripheral region of the optic.
9 . The IOL of claim 1 , wherein the IOL further comprises a tapered edge on at least a portion the peripheral region of the optic.
10 . The IOL of claim 9 , wherein said tapered edge further comprises an opaque tip region.
11 . The IOL of claim 9 , wherein said tapered edge further comprises a light scattering tip region.
12 . The IOL of claim 1 , wherein said peripheral region comprises at least one refractive surface adapted to redirect said peripheral light rays.
13 . The IOL of claim 1 , wherein the optic comprises a diffractive structure to provide at least a far-focus optical power and a near-focus optical power.
14 . The IOL of claim 1 , wherein the optic comprises a transparent polymeric material.
15 . The IOL of claim 1 , wherein the optic comprises at least one polymeric material selected from the group of acrylics, acrylates, methacrylates, silicones, polypropylenes and hydrogels.
16 . The IOL of claim 1 , wherein the optic comprises a copolymer of acrylate and methacrylate materials.
17 . The IOL of claim 1 , wherein the optic comprises a cross-linked copolymer of 2-phenylethyl acrylate and 2-phenylethyl methacrylate.
18 . A method of manufacturing an asymmetric intraocular lens (IOL), the method comprising forming an optic with at least one peripheral region adapted to inhibit transverse propagation of internally reflected light rays.
19 . The method of claim 18 , wherein the method further comprises joining the optic to at least one haptic.
20 . The method of claim 18 , wherein the method further comprises applying an opaque coating on at least a portion of a peripheral edge of the optic.
21 . The method of claim 18 , wherein the method further comprises applying an opaque coating on at least a portion of a posterior surface of the peripheral region of the optic.
22 . The method of claim 18 , wherein the method further comprises applying an opaque coating on at least a portion of anterior surface of the peripheral region of the optic.
23 . The method of claim 18 , wherein the method further comprises providing a light scattering composition on or within at least a portion of the peripheral region of the optic.
24 . The method of claim 23 , wherein the light scattering composition is a coating on at least a portion of the peripheral region of the optic.
25 . The method of claim 23 , wherein the light scattering composition is incorporated into at least a portion of the peripheral region of the optic.
26 . The method of claim 18 , wherein the method further comprises providing a compound curved surface on at least a portion of the peripheral region of the optic.
27 . The method of claim 18 , wherein the method further comprises providing a tapered edge on at least a portion of the peripheral region of the optic.
28 . The method of claim 27 , wherein the tapered edge further comprises an opaque tip region.
29 . The method of claim 27 , wherein the tapered edge further comprises light scattering tip region.
30 . The method of claim 18 , wherein the method further comprises providing at least one refractive surface adapted to redirect said peripheral light rays.
31 . The method of claim 18 , wherein the method further comprises providing a diffractive structure to provide at least a far-focus optical power and a near-focus optical power.
32 . The method of claim 18 , wherein the method further comprises selecting an optic that comprises a transparent polymeric material.
33 . The method of claim 18 , wherein the method further comprises selecting an optic that comprises at least one polymeric material selected from the group of acrylics, acrylates, methacrylates, silicones, polypropylenes and hydrogels.
34 . The method of claim 18 , wherein the method further comprises selecting an optic that comprises a copolymer of acrylate and methacrylate materials.
35 . The method of claim 18 , wherein the method further comprises selecting an optic that comprises a cross-linked copolymer of 2-phenylethyl acrylate and 2-phenylethyl methacrylate.
36 . A method of reducing visual artifacts in an eye with an implanted intraocular lens (IOL), the method comprising:
providing an IOL having an optic with at least one peripheral region adapted to inhibit transverse propagation of internally reflected light rays,
implanting the IOL into an eye of a patient.
37 . The method of claim 36 , wherein the step of providing an IOL further comprises selecting an IOL with an opaque peripheral region.
38 . The method of claim 37 , wherein the opaque peripheral region further comprises a coating on at least a portion of the peripheral region of the optic.
39 . The method of claim 37 , wherein the opaque peripheral region further comprises a light absorbing composition is incorporated into at least a portion of the peripheral region of the optic.
40 . The method of claim 36 , wherein the step of providing an IOL further comprises selecting an IOL with a light scattering composition on or within at least a portion of the peripheral region of the optic.
41 . The method of claim 40 , wherein the light scattering composition further comprises a coating on at least a portion of the peripheral region of the optic.
42 . The method of claim 40 , wherein the light scattering composition further comprises a light scattering material incorporated into at least a portion of the peripheral region of the optic.
43 . The method of claim 36 , wherein the step of providing an IOL further comprises providing a compound curved surface on at least a portion of the peripheral region of the optic.
44 . The method of claim 36 , wherein the step of providing an IOL further comprises providing an IOL with a tapered edge on at least a portion of the peripheral region of the optic.
45 . The method of claim 44 , wherein said tapered edge further comprises an opaque tip region.
46 . The method of claim 44 , wherein said tapered edge further comprises light scattering tip region.
47 . The method of claim 36 , wherein the step of providing an IOL further comprises providing an IOL with a peripheral region that comprises at least one refractive surface adapted to redirect said peripheral light rays.
48 . The method of claim 36 , wherein the step of providing an IOL further comprises providing an IOL with an optic that comprises a diffractive structure to provide at least a far-focus optical power and a near-focus optical power.