Accommodating intraocular lens
An intraocular lens (IOL) for implantation within a capsular bag of a patient's eye comprises an optical structure and a haptic structure. The optical structure comprises a planar member, a plano convex member, and a fluid optical element defined between the planar member and the plano convex member. The fluid optical element has an optical power. The haptic structure couples the planar member and the plano convex member together at a peripheral portion of the optical structure. The haptic structure comprises a fluid reservoir in fluid communication with the fluid optical element and a peripheral structure for interfacing to the lens capsule. Shape changes of the lens capsule cause one or more of volume or shape changes to the fluid optical element in correspondence to deformations in the planar member to modify the optical power of the fluid optical element.
1. An accommodating intraocular lens, comprising:
an annular lens support having an outer edge defining an outer periphery of the accommodating intraocular lens and surrounding an optical axis of the accommodating intraocular lens;
a non-deformable lens coupled to the annular lens support;
a deformable lens coupled to the annular lens support and spaced apart from the non-deformable lens; and
a fluid filled chamber between the non-deformable lens and the deformable lens, wherein the fluid filled chamber is an enclosed volume within the accommodating intraocular lens, and wherein the fluid filled chamber includes an axially-extending periphery portion extending generally parallel to the optical axis of the accommodating intraocular lens and surrounding at least a radially-inward portion of the fluid filled chamber, the periphery portion having a radially-outer wall extending generally parallel to the optical axis, and a radially-inner wall, wherein at least a portion of the radially-outer wall faces at least a portion of the radially-inner wall,
wherein the non-deformable lens is configured to displace along the optical axis and the deformable lens is configured to change in curvature about the optical axis when compressive force from an eye of a patient is applied to the annular lens support.
2. The intraocular lens of claim 1 wherein the axially-extending periphery portion of the fluid filled chamber is positioned between an outer perimeter of the deformable lens and the annular lens support.
3. The intraocular lens of claim 1 , further comprising a haptic structure coupled with the annular lens support and positioned radially-outward from the annular lens support with respect to the optical axis of the accommodating intraocular lens.
4. The intraocular lens of claim 3 wherein the haptic structure is integrally formed with the annular lens support.
5. The intraocular lens of claim 3 wherein the haptic structure is configured to transmit the compressive force from the eye of the patient to the annular lens support.
6. The intraocular lens of claim 3 wherein the haptic structure surrounds the annular lens support.
7. The intraocular lens of claim 1 wherein the non-deformable lens is configured to move away from the deformable lens when compressive force is applied to the annular lens support.
8. The intraocular lens of claim 1 , further comprising an annular membrane portion connecting the non-deformable lens to the annular lens support.
9. The intraocular lens of claim 1 wherein the fluid in the fluid filled chamber comprises saline, a non-ionic solution, and/or silicone oil.
10. The intraocular lens of claim 9 wherein the non-ionic solution comprises dextran.
11. The intraocular lens of claim 1 wherein the deformable lens is located at a position anterior to the non-deformable lens.
12. The intraocular lens of claim 1 , further comprising a step at a radially outward perimeter of the non-deformable lens.
13. The intraocular lens of claim 1 wherein a posterior surface of the non-deformable lens is convex.
14. The intraocular lens of claim 1 wherein an optical power of the fluid filled chamber increases when the curvature of the deformable lens is increased.
15. An accommodating intraocular lens, comprising:
a non-deformable lens;
a deformable lens coupled to the non-deformable lens around a periphery of the non-deformable lens, wherein the deformable lens is aligned with the non-deformable lens along an optical axis; and
an optical chamber between the non-deformable lens and the deformable lens, wherein the optical chamber is an enclosed volume within the accommodating intraocular lens, wherein the optical chamber contains an optical fluid, and wherein the optical chamber comprises a first region extending radially outward from the optical axis and a second region, the second region extending generally parallel to the optical axis at a radially-outermost portion of the optical chamber and having an outermost wall extending generally parallel to the optical axis and an inner wall, at least a portion of the inner wall facing at least a portion of the outer wall;
wherein the non-deformable lens is configured to displace along the optical axis and the deformable lens is configured to change in curvature about the optical axis when compressive force from an eye of a patient is applied to an annular lens support.
16. The intraocular lens of claim 15 , wherein the deformable lens is coupled to the non-deformable lens along the entire periphery of the non-deformable lens.
17. The intraocular lens of claim 15 , further comprising a haptic structure positioned radially outward from the second region of the optical chamber, wherein the haptic structure is configured to transmit the compressive force from the eye of the patient to the deformable and the non-deformable lenses.
18. The intraocular lens of claim 15 , wherein the second region of the optical chamber extends in an anterior direction.
19. The intraocular lens of claim 18 , wherein the deformable lens is positioned on an anterior side of the non-deformable lens.
20. The intraocular lens of claim 15 , wherein the deformable lens is fixedly connected to the non-deformable lens.
21. An accommodating intraocular lens, comprising:
a non-deformable lens;
a deformable lens coupled to the non-deformable lens, wherein the deformable lens is aligned with the non-deformable lens along an optical axis;
a fluid chamber between the non-deformable lens and the deformable lens, the fluid chamber comprising:
an optical portion;
a peripheral portion surrounding the optical portion; and
an optical fluid within the optical portion and the peripheral portion; and
a wall extending generally parallel to the optical axis and defining a portion of the peripheral portion of the fluid chamber;
wherein the wall is configured to pivot in response to a radially compressive force to move a peripheral portion of one or both of the non-deformable lens or the deformable lens toward the other of the non-deformable lens or the deformable lens to force fluid from the peripheral portion to the optical portion of the fluid chamber.