Accommodating intraocular lens (AIOL) assemblies, and discrete components therefor
Accommodating intraocular (AIOL) assemblies for enabling post implantation in situ manual selective displacement of an AIOL along a human eye's visual axis relative to stationary anchor points. Axial displacement may be over a continuous range or alternatively at discrete axial stopping positions typically from about 100 μm to about 300 μm apart. Novels AIOLs designed to be at least partially folded for facilitating insertion into a human eye through a relatively small incision.
1. An accommodating intraocular lens (AIOL) system for implantation in a human eye, comprising:
an accommodating intraocular lens comprising:
a housing defining, at least in part, a cavity, the housing formed of a first material;
an optical element contained within the cavity of the housing that is formed of a second material that is different from the first material, is flowable, and has a refractive index greater than a refractive index of aqueous humor; and
a reciprocally movable compression force element configured to move relative to the housing in response to ciliary muscle contraction between a first position and a second position,
wherein movement into the second position applies a compression force by the compression force element at a first location causing the accommodating intraocular lens to bulge at a second location away from the first location suitable for near vision; and
a haptics system adapted to engage with ocular tissues for retaining the accommodating intraocular lens in the eye.
2. The AIOL system according to claim 1 , wherein the housing has a diameter of at least about 6 mm to about 7 mm.
3. The AIOL system according to claim 1 , wherein the housing is formed of a silicone or acrylic-based polymer material.
4. The AIOL system according to claim 1 , wherein the optical element has a continuous, curvilinear leading surface when the compression force element is in the second position.
5. The AIOL system according to claim 1 , wherein the optical element is suitable for distance vision when the compression force element is in the first position and the optical element is suitable for near vision when the compression force element is in the second position.
6. The AIOL system according to claim 1 , wherein the optical element is formed of a silicone-based material.
7. The AIOL system according to claim 1 , wherein the accommodating intraocular lens has a continuously variable Diopter strength having a minimum Diopter strength suitable for distance vision and having a maximum Diopter strength suitable for near vision.
8. The AIOL system according to claim 1 , wherein the haptics system is integrally formed with the accommodating intraocular lens.
9. The AIOL system according to claim 1 , wherein the haptics system includes a pair of C-shaped haptics extending in opposite directions from the accommodating intraocular lens.
10. The AIOL system according to claim 1 , wherein the haptics system includes spaced-apart pointed puncturing members.
11. The AIOL system according to claim 1 , wherein the haptics system further comprises a surface extending in a plane perpendicular to a visual axis of the accommodating intraocular lens, the surface of the haptics system comprises a leading surface or a trailing surface of the haptics system.