US2016193040A1PendingUtilityA1

Intraocular Lens System

Assignee: QURESHI MPriority: Aug 12, 2013Filed: Aug 12, 2014Published: Jul 7, 2016

Est. expiryAug 12, 2033(~7.1 yrs left)· nominal 20-yr term from priority

Inventors:M. Qureshi Pablo Artal Robbie Scott Juan Tabernero

A61F 2/164A61F 2/1648A61F 2002/1683A61F 2/1637A61F 2/1651A61F 2002/1699A61F 2002/1681A61F 2002/169A61F 2/1656A61F 2/1613A61F 2002/1689A61F 2002/1696

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References

Claims

Abstract

An intraocular lens system comprising: an anterior light-converging intraocular lens ( 16 ) for positioning within the eye, the anterior lens having an anterior surface and a posterior surface; and a posterior light-diverging intraocular lens ( 17 ) for positioning within the eye posterior to the anterior lens, the posterior lens having an anterior surface and a posterior surface; wherein the posterior lens is separate to the anterior lens; and wherein at least one of the surfaces of the anterior lens or surfaces of the posterior lens is a modified surface which includes a surface aberration which increases the depth of focus of the lens, optimises image quality and may also provide for a magnified image over a range of retinal eccentricities.

Claims

exact text as granted — not AI-modified

1 . An intraocular lens system comprising:
an anterior light-converging intraocular lens for positioning within the eye, the anterior lens having an anterior surface and a posterior surface; and a posterior light-diverging intraocular lens for positioning within the eye posterior to the anterior lens, the posterior lens having an anterior surface and a posterior surface; wherein the posterior lens is separate to the anterior lens; and wherein at least one of the surfaces of the anterior lens or surfaces of the posterior lens is a modified surface which includes a surface aberration which increases the depth of focus of the lens.

2 . An intraocular lens system according to claim 1 , wherein the surface aberration includes a spherical aberration.

3 . An intraocular lens system according to claim 2 , wherein the modified surface is a rotationally symmetric polynomial surface.

4 . An intraocular lens according to any one of the preceding claims, wherein the surface aberration includes an aberration of at least 4 th order.

5 . An intraocular lens according to any one of the preceding claims, wherein the surface aberration includes an aberration of no more than 6 th order.

6 . An intraocular lens according to any one of claims 3 to 5 , wherein the surface sag (z coordinate) of the modified surface is given by:

z
=

cr
2

1
+

1
-

(

1
+
k

)



c
2



r
2

α
1



r
2

α
2



r
4

α
3



r
6

7 . The intraocular lens according to any one of the preceding claims, wherein the modified surface includes a second aberration, the second aberration being a Zernike polynomial for any one of:
tilt, defocus, astigmatism, or coma.

8 . An intraocular lens system according to any one of the preceding claims comprising a first and a second modified surface.

9 . An intraocular lens system according to claim 8 , wherein both the anterior lens and the posterior lens each include a modified surface.

10 . An intraocular lens system according to claim 9 , wherein the posterior surface of the anterior lens and the anterior surface of the posterior lens are both modified surfaces.

11 . An intraocular lens system according to any one of the preceding claims, further comprising:
an anterior lens positioning means; and a posterior lens positioning means;
wherein the anterior positioning means is configured such that when the anterior lens is positioned within the eye, the anterior positioning means locates the anterior lens so that it is aligned with the optical axis of the eye; and
wherein the posterior positioning means is configured such that when the posterior lens is positioned within the eye, the posterior positioning means locates the posterior lens in so that it is aligned with the optical axis of the eye.

12 . An intraocular lens system according to claim 11 , wherein the anterior positioning means comprises a plurality of haptics of equal lengths.

13 . An intraocular lens system according to any one of claims 1 to 11 , further comprising:
an anterior lens positioning means; and
a posterior lens positioning means;

wherein the anterior positioning means is configured such that when the anterior lens is positioned within the eye, the anterior positioning means locates the anterior lens so that it is displaced from alignment with the optical axis of the eye; and
wherein the posterior positioning means is configured such that when the posterior lens is positioned within the eye, the posterior positioning means locates the posterior lens in so that it is aligned with the optical axis of the eye.

14 . An intraocular lens system according to claim 13 , wherein the anterior positioning means comprises a plurality of haptics of different lengths.

15 . An intraocular lens system according to any one of claims 11 to 14 , wherein the anterior lens and the anterior positioning means is a single-piece; and/or
Wherein the posterior lens and the posterior positioning means is a single-piece.

16 . An intraocular lens system according to any one of the preceding claims, wherein one or both of the intraocular lenses is tinted yellow.

17 . An intraocular lens system of any one of the preceding claims wherein one or both of the anterior and posterior optics are modified to include an opaque rim.

18 . An intraocular lens system of any one of the preceding claims, wherein optics of the lenses are modified such that a magnified image may be focused on the retina at a wide angle from the foveal centre.

19 . An intraocular lens system according to any one of the preceding claims wherein the surfaces of one or both lenses is modified to incorporate a Fresnel prism.

20 . An intraocular lens system according to any one of the preceding claims wherein a third intraocular lens with a surface incorporating a Fresnel prism is locatable between the first and second lens to provide a prismatic effect.

21 . An intraocular lens system according to any one of claims 1 to 20 , wherein a third intraocular lens with a surface incorporating a diffractive property is locatable between the first and second lens to increase the depth of focus of the system.

22 . An intraocular lens system according to any one of the preceding claims, where the anterior lens is suitable to be positioned in the anterior chamber of the eye and the posterior lens is suitable to be located in the ciliary sulcus of the eye.

23 . An intraocular lens system according to any one of claims 1 to 22 where the anterior lens is suitable to be positioned in the ciliary sulcus of the eye and the posterior lens is suitable to be positioned in the capsular bag of the eye.

24 . An intraocular lens system according to any one of the preceding claims, wherein at least part of a lens is made from a biocompatible material.

25 . An intraocular lens system according to claim 24 , wherein the biocompatible material is silicone or polymethylmethacrylate.

26 . An intraocular lens system according to any one of claim 1 to claim 10 , wherein the anterior lens is supported by a support device with a symmetrical haptic design which enables the optical axis of the anterior lens to be freely moved vertically in relation to that of the posterior lens so as to enable a retinal image to be focused either at the foveal centre or at a range of areas on the retina eccentric to the foveal centre.

27 . An intraocular lens system according to claim 26 wherein the anterior lens and support device are marked such that alignment of the lens with a particular mark delivers a set degree of prismatic effect.

28 . An intraocular lens system according to claim 26 ,
Wherein the anterior lens includes a rim; and wherein the rim of the lens is modified and the points at which it makes contact with the supporting plates are modified such that it is held in position without the need for friction at set points along its axis of movement.

29 . An intraocular lens system according to any one of claim 1 to claim 10 , wherein the posterior lens is supported by a support device with a symmetrical haptic design which permits the optical axis of the posterior lens to be freely moved vertically in relation to that of the anterior lens so as to enable a retinal image to be focused either at the foveal centre or at a range of areas on the retina eccentric to the foveal centre.

30 . An intraocular lens system according to any one of the preceding claims, comprising haptics for the anterior lens and/or posterior lens(es) which are angled to enable said lens(es) to be tilted in a variety of directions relative to the optical axis of the eye.

31 . A system according to claim 4 where the optic of the second IOL is supported by a device with a symmetrical haptic design which enables the optical axis of the posterior optic to be freely moved vertically in relation to that of the first IOL so as to enable a retinal image to be focused either at the foveal centre or an infinite range of angles away from the foveal centre.

32 . An intraocular lens system comprising:
an anterior light-converging intraocular lens for positioning within the eye; and a posterior light-diverging intraocular lens for positioning within the eye;
wherein the anterior lens comprises an opaque rim.

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