Modular IOL design
AssigneeAlcon Inc.
InventorsStephen John Collins, Philip Matthew McCulloch, Rudolph F. Zacher
Life of this patent
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Abstract
A modular intraocular lens (IOL) with a ring configured to prevent glare artifacts. The ring includes a flange on the posterior rim, in which an anterior surface on the flange has a first profile and a posterior surface of the flange has a second profile non-parallel with the first profile. Non-parallel surfaces of the flange can be configured to defocus light transmitted at off-axis angles through an optic and the flange.
Claims12
A modular intraocular lens (IOL), comprising:
- an optic comprising an anterior surface and a posterior surface;
- and
- an annular ring comprising:
- an anterior rim with an anterior opening;
- and
- a posterior rim with a flange, wherein:
- the anterior rim and the posterior rim form an inwardly facing recess;
- a flange anterior surface defines a first profile;
- and
- a flange posterior surface defines a second profile, wherein the second profile is non-parallel with the first profile, and wherein the flange posterior surface comprises a convex curvature having a posteriorly-extending protrusion.
An intraocular lens assembly, comprising:
- an optic defined by an optic anterior surface having a first curvature and an optic posterior surface having a second curvature;
- a ring for positioning the optic in an intracapsular bag, the ring comprising:
- an anterior rim defining an anterior rim opening with an inner diameter sized to allow insertion of the optic into the ring;
- an inwardly facing recess for retaining the optic in the ring;
- a posterior rim defining a posterior rim opening;
- and
- a flange formed on the posterior rim, comprising a flange inner diameter less than a diameter of the optic, wherein:
- a flange anterior surface defines a first profile;
- and
- a flange posterior surface defines a second profile, wherein the second profile is non-parallel with the first profile, and wherein the flange posterior surface comprises a convex curvature having a posteriorly-extending protrusion.
A method of manufacturing a ring for an intraocular lens (IOL), the method comprising:
- forming an anterior rim with an anterior rim opening, the anterior rim opening having a diameter less than a diameter of an optic;
- forming a posterior rim defining a posterior rim opening;
- and
- forming a flange relative to the posterior rim, comprising:
- forming a flange anterior surface with a first profile;
- and
- forming a flange posterior surface with a second profile non-parallel with the first profile, wherein the flange posterior surface comprises a convex curvature having a posteriorly-extending protrusion.
Dependencies are inferred from the claim text.