Accommodating intraocular lens
Disclosed is an accommodating intraocular lens device for treatment of an eye including a stabilization haptic ( 120 ) configured to be positioned within a region of an eye and a lens body having a sealed chamber containing a fixed volume of optical fluid. The lens body includes a shape changing membrane ( 145 ) configured to outwardly bow in a region surrounding the optical axis of the eye; a shape deformation membrane configured to undergo displacement relative to the first shape changing membrane; and a static element ( 150 ). An inner surface of the shape changing membrane, an inner surface of the shape deformation membrane and an inner surface of the static element collectively form the sealed chamber. The lens device also includes a force translation arm ( 115 ) having a first end configured to contact an outer surface of the shape deformation membrane of the lens body and a second end configured to engage a ciliary structure of the eye. The force translation arm is configured to move relative to the lens body upon movement of the ciliary structure.
1. An accommodating intraocular lens device for treatment of an eye, the accommodating intraocular lens device comprising:
a lens body having a sealed chamber containing a fixed volume of fluid, the lens body comprising:
an anterior membrane configured to bow outward in a central region of the lens body, the anterior membrane comprising a first thickness near a perimeter region of the lens body and a second thickness near the central region of the lens body;
a perimeter membrane configured to undergo inward displacement towards an optical axis of the eye relative to the anterior membrane upon application of a compressive force on the sealed chamber; and
a perimeter support coupled to the anterior membrane at the perimeter region of the lens body, the perimeter support configured to mechanically isolate optical components of the lens body to prevent distortion during accommodation, wherein the perimeter support has an outer wall that is separated a distance from the perimeter membrane and tapers to avoid contact with the perimeter membrane during inward displacement;
a stabilization haptic configured to be positioned within the capsular bag of the eye; and
a force translation arm projecting outward from the perimeter membrane of the lens body and configured to extend outside the capsular bag to engage a ciliary structure of the eye, wherein, upon movement of the ciliary structure, the force translation arm is configured to move relative to the lens body and to apply the compressive force on the perimeter membrane.
2. The device of claim 1 , wherein the movement of the force translation arm is inward towards the optical axis of the eye, and wherein the compressive force causes a deformation of a perimeter region of the sealed chamber.
3. The device of claim 2 , wherein the deformation causes the fluid in the sealed chamber to press against an inner surface of the anterior membrane causing the central region to bow outward.
4. The device of claim 1 , wherein the stabilization haptic is selected from the group consisting of open-loop, closed-loop, plate, plate loop, monobloc-plate, j-loop, c-loop, modified J-loop, multi-piece, single-piece, angulated, and planar haptics.
5. The device of claim 1 , wherein the stabilization haptic is positioned on a different plane than the force translation arm.
6. The device of claim 1 , wherein the lens body further comprises a static element that does not undergo a shape change, wherein the static element is on a posterior side of the lens body.
7. The device of claim 6 , wherein the static element comprises a static lens having an optical power.
8. The device of claim 7 , wherein the optical power of the static lens is up to ±30 D.
9. The device of claim 1 , wherein the anterior membrane has a constant thickness between the first thickness and the second thickness.
10. The device of claim 1 , wherein the anterior membrane of the lens body comprises a variable thickness between the first thickness and the second thickness.
11. The device of claim 10 , wherein the first thickness near the perimeter region of the lens body is greater than the second thickness near the central region surrounding the optical axis of the eye.
12. The device of claim 11 , wherein the anterior membrane has a linear gradient thickness or a curved gradient thickness from the first thickness near the perimeter region towards the second thickness near the central region.
13. The device of claim 1 , wherein the fluid comprises a non-compressible liquid or gel of high clarity and transmission in the visible spectrum.
14. The device of claim 1 , wherein the fluid is a silicone, a functionalized silicone, a hydrocarbon, or a functionalized hydrocarbon fluid.
15. The device of claim 1 , wherein the fluid is a fluorinated silicone, an aromatic silicone, or a phenyl functionalized silicone.
16. The device of claim 1 , wherein the fluid is a long chain hydrocarbon fluid or a halogenated hydrocarbon fluid.
17. The device of claim 1 , wherein the fluid is a fluorosilicone oil.
18. The device of claim 1 , wherein the force translation arm has a length configured to extend between the perimeter membrane of the lens body and the ciliary structure.
19. The device of claim 1 , wherein at least a portion of the lens body is structured to be positioned inside the eye and external to a capsulorhexis of an anterior portion of the capsular bag of the eye.
20. The device of claim 1 , wherein the perimeter support includes one or more channels allowing for fluid communication between a deformable region and a central region of the sealed chamber.