Foldable accommodating intraocular lens

摘要

A foldable accommodating intraocular lens (AIOL) for implantation in a human eye, the AIOL including a hollow flattened sphere shaped housing including a shape memory optical element and a tubular casing mounted on the housing for reciprocation relative thereto for selectively compressing the shape memory optical element between a non-compressed shape and a compressed shape whereby the AIOL has a continuously variable Diopter strength.

主权项

1. An 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 for tensioning a capsular diaphragm in an anterior direction along the visual axis on its relaxation from a contracted ciliary body state to a relaxed ciliary body state, the AIOL having a longitudinal axis intended to be deployed co-directional with the human eye's visual axis, the AIOL comprising:
(a) a hollow flattened sphere shaped housing including an annular anterior member with a leading surface having an internal rim defining an aperture, a posterior member with a trailing surface, and a shape memory optical element resiliently elastically deformable between a non-compressed shape with a first Diopter strength in a non-compressed state of the AIOL and a compressed shape with a second Diopter strength different than said first Diopter strength in a compressed state of the AIOL, said at least one shape memory optical element having a leading surface including a central portion exposed through said aperture; and (b) a tubular casing mounted on said housing for reciprocation relative to said posterior member for selectively compressing said shape memory optical element from its non-compressed shape to its compressed shape for bulging into said casing relative to said non-compressed shape whereby said AIOL has a continuously variable Diopter strength from a minimum Diopter strength for distance vision and a maximum Diopter strength for near vision.