Accommodating intraocular lens
An accommodating intraocular lens (AIOL) for implantation within a capsular bag of a patient's eye comprises first and second components coupled together to define an inner fluid chamber and an outer fluid reservoir. The inner region of the AIOL provides optical power with one or more of the shaped fluid within the inner fluid chamber or the shape of the first or second components. The fluid reservoir comprises a bellows region with one or more folds of the bellows extending circumferentially around an optical axis of the eye. The bellows engages the lens capsule, and a compliant fold region between the inner and outer bellows portions allows the profile of the AIOL to deflect when the eye accommodates for near vision. Fluid transfers between the inner fluid chamber and the outer fluid reservoir to provide optical power changes when the eye accommodates.
1. An accommodating intraocular lens for placement within a lens capsule of a subject, the accommodating intraocular lens comprising:
a first component having a first optical region and a first bellows region;
a second component having a second optical region and a second bellows region, the second component coupled to the first component;
a fluid chamber between the first optical region and the second optical region; and
a fluid reservoir between the first bellows region and the second bellows region, the fluid reservoir in fluid communication with the fluid chamber to transfer fluid between the fluid chamber and the fluid reservoir in response to shape changes of the lens capsule to provide optical power changes to the accommodating intraocular lens;
wherein the first bellows region extends continuously circumferentially around the first lens region and the second bellows region extends continuously circumferentially around the second lens region;
wherein the first component comprises a first annularly shaped stiff coupling structure extending circumferentially between the first lens region and the first bellows region to inhibit radial movement of the first lens region with radial movement of the first bellows region and wherein the second component comprises a second annularly shaped stiff coupling structure extending circumferentially between the second lens region and the second bellows region to inhibit radial movement of the second lens region with radial movement of the second bellows region and wherein the first annularly shaped structure comprises a first radial thickness greater than a first thickness of the first bellows region and wherein the second annularly shaped structure comprises a second radial thickness greater than the second thickness of the second bellows region.
2. The accommodating intraocular lens of claim 1 , wherein the first lens component is glued to the second lens component at a joint.
3. The accommodating intraocular lens of claim 1 , further comprising protrusions on an inner surface of one or more of the first component or the second lens component to provide a gap between the first component and the second component.
4. The accommodating intraocular lens of claim 1 , wherein the first lens component is glued to the second lens component at a joint extending circumferentially around the first lens component and the second lens component.
5. The accommodating intraocular lens of claim 1 , wherein the first lens region comprises an anterior lens component and the second lens region comprises a posterior lens component.
6. The accommodating intraocular lens of claim 1 , wherein one or more of the first or second components comprises a shell.
7. The accommodating intraocular lens of claim 1 , wherein one of the first or second components comprises a planar member and the other of the first or second components comprises a plano convex member shaped to provide an optical power.
8. The accommodating intraocular lens of claim 1 , wherein the fluid within the fluid chamber shapes the fluid chamber so as to provide an optical power.
9. The accommodating intraocular lens of claim 8 , wherein the optical power changes to the accommodating intraocular lens comprise a change to the optical power provided by the shape of the fluid within the fluid chamber.
10. The accommodating intraocular lens of claim 9 , wherein the change to the optical power provided by the shape of the fluid within the fluid chamber comprises a change to a shape of the fluid chamber.
11. The accommodating intraocular lens of claim 1 , wherein the optical power changes to the accommodating intraocular lens comprises a change to a separation distance between the first optical region and the second optical region.
12. The accommodating intraocular lens of claim 1 , wherein protrusions located between the bellows region and the lens region connect the first lens component to the second lens component and wherein the protrusions are located on one or more stiff coupling structures of one or more of the first lens component or the second lens component to provide a gap between the first component and the second component.
13. The accommodating intraocular lens of claim 1 , wherein the fluid reservoir comprises a compliant fold region between inner and outer bellows regions, the complaint region being thinner than the inner and outer bellows.
14. The accommodating intraocular lens of claim 1 , further comprising a plurality of protrusions coupled to one or more of the first or second components and separates the first and second lens components from one another.
15. The accommodating intraocular lens of claim 14 , wherein the plurality of protrusions is disposed between the bellows regions and the lens regions.
16. The accommodating intraocular lens of claim 14 , wherein the plurality of protrusions defines a plurality of fluid channels between the fluid chamber and the fluid reservoir, each of the plurality of fluid channel defined between two adjacent protrusions.
17. The accommodating intraocular lens of claim 1 , wherein one or more of the first or second components comprises a polymeric material.
18. The accommodating intraocular lens of claim 17 , wherein the polymeric material comprises a PMMA copolymer.
19. The accommodating intraocular lens of claim 17 , wherein the polymeric material is water permeable.
20. The accommodating intraocular lens of claim 17 , wherein the polymeric material is hydrophilic.
21. The accommodating intraocular lens of claim 17 , wherein the polymeric material is configured to transfer water within the lens capsule of the subject into or out of one or more of the fluid chamber or fluid reservoir through the polymeric material to achieve an osmotic equilibrium when the accommodating intraocular lens is placed within the lens capsule.
22. The accommodating intraocular lens of claim 17 , wherein the polymeric material is non-permeable to compounds having a molecular weight of greater than 40 kDa.
23. The accommodating intraocular lens of claim 1 , further comprising fluid within the fluid chamber, wherein the fluid comprises one or more of a solution, an oil, a silicone oil, a solution of dextran, a solution of high molecular weight dextran, or a solution of another high molecular weight compound.
24. The accommodating intraocular lens of claim 1 , wherein the fluid reservoir comprises a continuous baffle structure disposed about a periphery of the fluid chamber.
25. The accommodating intraocular lens of claim 24 , wherein the continuous structure comprises one or more of an annular, elliptical, or rotationally symmetric shape.
26. The accommodating intraocular lens of claim 1 , wherein the first and second components are sufficiently flexible to be folded into a reduced cross-section delivery configuration.
27. The accommodating intraocular lens of claim 26 , wherein the reduced cross-section delivery configuration comprises one or more of folds or rolls of the intraocular lens around a delivery axis transverse to an optical axis of the accommodating intraocular lens.
28. The accommodating intraocular lens of claim 27 , wherein the first and second lens components comprise a polymer material, and wherein the first and second lens components are bonded with a prepolymer of polymer material.
29. The accommodating intraocular lens of claim 26 , further comprising a delivery tube or aperture and wherein the reduced cross-section delivery configuration comprises the intraocular lens advanced into the delivery tube or aperture.
30. The accommodating intraocular lens of claim 1 , wherein the fluid reservoir comprises a haptic structure to engage the lens capsule.
31. The accommodating intraocular lens of claim 1 , wherein the fluid within the fluid chamber has an index of refraction greater than an index of refraction of an aqueous humor of the eye of about 1.336.
32. The accommodating intraocular lens of claim 1 , wherein the first or second lens regions provides no optical power.
33. The accommodating intraocular lens of claim 1 , wherein the fluid within the fluid chamber provides optical power.
34. The accommodating intraocular lens of claim 1 , wherein the first and second lens components are bonded to one another.
35. The accommodating intraocular lens of claim 1 , wherein one or more of the first lens component or the second lens component have been directly fabricated.
36. The accommodating intraocular lens of claim 1 , wherein the first lens component and the second lens component have been directly fabricated together and comprise a single piece.
37. The accommodating intraocular lens of claim 1 , wherein the first lens component and the second lens component have been molded separately and bonded together.
38. The accommodating intraocular lens of claim 1 , wherein the first lens component and the second lens component have been lathed separately and bonded together.
39. The accommodating intraocular lens of claim 1 , wherein the first lens component and the second lens component are bonded together at protrusions extending between the first component and the second component.
40. The accommodating intraocular lens of claim 1 , wherein the first lens component comprises a first fabricated part and the second lens component comprises a second fabricated part.
41. The accommodating intraocular lens of claim 1 , wherein the first optical region comprises a first membrane and the second optical region comprises a second membrane, and wherein the first and second membranes have no optical power.
42. The accommodating intraocular lens of claim 41 , wherein the first and second membranes define the fluid chamber, and further comprising a fluid in the fluid chamber configured to provide an optical power.
43. All accommodating intraocular lens for placement within a lens capsule of a subject, the accommodating intraocular lens comprising:
a first component having a first optical region and a first bellows region;
a second component having a second optical region and a second bellows region, the second component coupled to the first component;
a fluid chamber between the first optical region and the second optical region; and
a fluid reservoir between the first bellows region and the second bellows region, the fluid reservoir in fluid communication with the fluid chamber to transfer fluid between the fluid chamber and the fluid reservoir in response to shape changes of the lens capsule to provide optical power changes to the accommodating intraocular lens;
wherein the first bellows region extends continuously circumferentially around the first lens region and the second bellows region extends continuously circumferentially around the second lens region;
wherein the first bellows region comprises one or more folds extending continuously circumferentially around an optical axis of the first lens region and the second bellows region comprises one or more folds extending continuously circumferentially around an optical axis of the second lens region.
44. An accommodating intraocular lens for placement within a lens capsule of a subject, the accommodating intraocular lens comprising:
a first component having a first optical region and a first bellows region;
a second component having a second optical region and a second bellows region, the second component coupled to the first component;
a fluid chamber between the first optical region and the second optical region, and
a fluid reservoir between the first bellows region and the second bellows region, the fluid reservoir in fluid communication with the fluid chamber to transfer fluid between the fluid chamber and the fluid reservoir in response to shape changes of the lens capsule to provide optical power changes to the accommodating intraocular lens;
wherein the first bellows region extends continuously circumferentially around the first lens region and the second bellows region extends continuously circumferentially around the second lens region;
wherein the first bellows region comprises first one or more folds extending inwardly and continuously circumferentially around the first lens region and the second bellows region comprises second one or more folds extending inwardly and continuously circumferentially around the second lens region, the first one or more folds and the second one or more folds extending toward each other.