Accommodating intraocular lens assemblies and accommodation measurement implant
AssigneeNuLens Ltd.
InventorYehoshua Ben Nun
Life of this patent
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Abstract
The present invention pertains to accommodating intraocular lens (AIOL) assemblies including a haptics system for self-anchoring implantation in a human eye's annular ciliary sulcus for retaining an AIOL at a desired position along the human eye's visual axis, and an accommodation measurement implant (AMI) for determining accommodation and accommodation forces in an experimental set-up including an animal's eye.
Claims25
An accommodating intraocular lens (AIOL) assembly for self-anchoring implantation in a human eye having a visual axis, a sclera of tough connective tissue, an annular ciliary sulcus, and a sphincter-like ciliary body having a relaxed state for tensioning a capsular diaphragm in an anterior direction along the visual axis, the AIOL assembly comprising:
- a) an accommodating intraocular lens (AIOL) having an anterior surface and a posterior surface, and at least one shape memory optical element resiliently elastically deformable between a natural shape with a first Diopter strength and a deformed shape with a second Diopter strength different than said first Diopter strength whereby said AIOL has a continuously variable Diopter strength between a minimum Diopter strength for distance vision purposes and a maximum Diopter strength for near vision purposes;
- and
- b) a haptics system including a main body formed of a rigid material with a longitudinal axis intended to be co-directional with the human eye's visual axis and at least two haptics each with at least one pointed puncturing member capable of penetrating the tough connective tissue of the human eye's sclera for self-anchoring implantation of said haptics system in the human eye's annular ciliary sulcus, at least two spaced apart stationary anchor points adaatedt to retain said AIOL along the human eye's visual axis at an in situ manually selectively displaceable desired position there along relative to said at least two stationary anchor points so that said haptics system is capable of urging said posterior surface against the human eye's capsular diaphragm from an anterior direction for determining said AIOL's Diopter strength at said desired position, said haptics system including a portion that is capable of being physically altered for adjustment of said AIOL relative to said anchor points after implantation, whereupon relaxation of the human eye's ciliary body is capable of urging the human eye's capsular diaphragm against said posterior surface from a posterior direction for affecting said AIOL's Diopter strength.
A discrete accommodating intraocular lens (AIOL) for implantation in a human eye having a visual axis, a sclera of tough connective tissue, an annular ciliary sulcus, and a sphincter-like ciliary body having a relaxed state for tensioning a capsular diaphragm in an anterior direction along the visual axis,
- a discrete haptics system having a tubular main body formed of a rigid material with a longitudinal axis and at least two haptics each with at least one pointed puncturing member capable of penetrating the tough connective tissue of the human eye's sclera for self-anchoring implantation in the human eye's annular ciliary sulcus, at least two spaced apart stationary anchor points adapted to retain the AIOL along the human eye's visual axis at an in situ selectively displaceable desired position therealong relative to the at least two spaced apart stationary anchor points,
- the AIOL comprising a discrete tubular casing having a longitudinal axis, an anterior surface and a posterior surface, and at least one shape memory optical element resiliently elastically deformable between a natural shape with a first Diopter strength and a deformed shape with a second Diopter strength different than said first Diopter strength whereby the AIOL has a continuously variable Diopter strength between a minimum Diopter strength for distance vision purposes and a maximum Diopter strength for near vision purposes;
- said posterior surface being capable of being urged against the human eye's capsular diaphragm from an anterior direction for determining the AIOL's Diopter strength at the desired position such that relaxation of the human eye's ciliary body urges the human eye's capsular diaphragm against said posterior surface from a posterior direction for affecting said AIOL's Diopter strength, the haptics system including a portion that is capable of being physically altered for adjustment of said AIOL relative to the anchor points after implantation, whereupon relaxation of the human eye's ciliary body is capable of urging the human eye's ciliary body capsular diaphragm against said posterior surface from a posterior direction for affecting said AIOL's Diopter strength.
Dependencies are inferred from the claim text.