Intraocular lenses having closed-loop ring haptic structures
An ophthalmic device includes an optic including an optic axis and a periphery and a closed-loop ring haptic structure coupled with the optic. The closed loop haptic structure includes a first ring structure having a first characteristic length, a second ring structure having a second characteristic length, and a plurality of connectors coupling the first ring structure and the second ring structure. The first ring structure is positioned adjacent to the periphery of the optic and is coupled to the entire periphery of the optic, and the first characteristic length is less than the second characteristic length.
1. An ophthalmic device comprising:
an optic including an optic axis and a periphery; and
a closed-loop ring haptic structure coupled with the optic and including a first ring having a first characteristic length, a second ring having a second characteristic length, and a plurality of connectors coupling the first ring and the second ring, wherein:
the first ring is positioned adjacent to the periphery of the optic and is coupled to the entire periphery of the optic; and
the first characteristic length is less than the second characteristic length; and
each of the plurality of connectors is curved such that each of the plurality of connectors includes a first component extending in a substantially radial direction and a second component extending in a direction substantially perpendicular to the radial direction in the same axial plane as the first component.
2. The ophthalmic device of claim 1 , wherein the second ring further includes a third characteristic length.
3. The ophthalmic device of claim 2 , wherein the first ring includes a plurality of apertures.
4. The ophthalmic device of claim 1 , wherein:
the optic and the first ring are located in a first plane that is substantially perpendicular to the optical axis; and
the second ring is located in a second plane that is substantially perpendicular to the optical axis.
5. The ophthalmic device of claim 4 , wherein the first plane is posterior of the second plane.
6. The ophthalmic device of claim 4 wherein each of the plurality of connectors includes a component extending parallel to the optical axis.
7. The ophthalmic device of claim 1 , wherein at least one of the plurality of connectors comprises a plurality of struts.
8. The ophthalmic device of claim 1 , wherein the plurality of connectors comprises a first set of ring structures connected to the first ring and a second set of ring structures connected to the second ring.
9. The ophthalmic device of claim 1 , wherein the second ring comprises a plurality of apertures, such that the thickness of the second ring along the optical axis varies with radial position around the optic.
10. An ophthalmic device comprising:
an optic including an optic axis and a periphery; and
a closed-loop ring haptic structure coupled with the optic and including a first ring having a first characteristic length, a second ring having a second characteristic length, and a plurality of connectors coupling the first ring and the second ring, wherein:
the first ring is positioned adjacent to the periphery of the optic and is coupled to the entire periphery of the optic;
the first characteristic length is less than the second characteristic length; and
the plurality of connectors comprises a first set of ring structures connected to the first ring and a second set of ring structures connected to the second ring.
11. An ophthalmic device comprising:
an optic including an optic axis and a periphery; and
a closed-loop ring haptic structure coupled with the optic and including a first ring having a first characteristic length, a second ring having a second characteristic length, and a plurality of connectors coupling the first ring and the second ring, wherein:
the first ring is positioned adjacent to the periphery of the optic;
the first characteristic length is less than the second characteristic length; and
the first ring includes a plurality of apertures surrounded by portions of the first ring.