Intraocular, accommodating lens and methods of use
An intraocular lens comprises an optical element adapted to be implanted within the capsular bag of a human eye. The optical element includes one or more internal layers formed by one or more planes that are moveable relative to one another in order to effect the power of the optical element.
1. An intraocular lens, comprising:
an optical element adapted to be implanted in a human eye, wherein the optical element comprises a unitary structure having a plurality of surfaces extending through a portion of the structure and forming one or more concentric internal layers and an outer layer, wherein the concentric internal layers are surrounded by the outer layer at a first region and the concentric internal layers become the outer layer at a second region,
wherein each of the plurality of surfaces forms first and second juxtaposed internal surfaces that are slideably moveable relative to one another in order to effect the power of the optical element, and wherein the unitary structure is formed of only a single material.
2. A lens as in claim 1 , wherein the first and second juxtaposed internal surfaces are in direct contact and slidable relative to each other.
3. A lens as in claim 1 , wherein the first and second juxtaposed internal surfaces are separated by a solid, liquid, or gas medium.
4. A lens as in claim 3 , wherein the medium is hydrogel or silicone oil.
5. A lens as in claim 4 , wherein the medium and the optical element have identical refractive indices.
6. A lens as in claim 1 , wherein a femtosecond laser is used to form the plurality of surfaces.
7. A lens as in claim 6 , wherein the femtosecond laser has a wavelength in the range of about 1100 nm to about 1200 nm.
8. A lens as in claim 1 , wherein at least one property of the concentric internal layers is adapted to maximize an amount of shape change in one or more locations of the lens.
9. A lens as in claim 8 , wherein the at least one property is a thickness of a layer relative to another layer.
10. A lens as in claim 8 , wherein the at least one property is a Young's modulus of a layer relative to another layer.
11. A lens as in claim 8 , wherein the at least one property is a position of a layer relative to another layer.
12. A lens as in claim 1 , wherein the optical element includes one or more chambers that are filled with a flowable material.
13. A lens as in claim 1 , wherein the outer layer is stiffer than the one or more concentric internal layers at the first region.
14. A lens as in claim 1 , wherein the optical element is adapted to be implanted within a capsular bag of a human eye.