Stable iol base design to support second optic
AssigneeAlcon Inc.
InventorsJames M. Scott, Raza Shah
Life of this patent
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Abstract
An intraocular lens (IOL) configured to support a first optic for functioning as a single lens IOL and configured to support a second optic for functioning as a dual optic IOL. The base includes a first optic for providing a base power. A recess in an anterior rim of the base is configured for positioning a radial extension of a second optic. The geometry of the recess is configured to securely couple to the radial extension to prevent rotation of the second optic relative to the base and prevent tilting of the second optic relative to an optic axis.
Claims19
A multi-part intraocular lens (IOL), comprising:
- a first optic comprising an anterior surface and a posterior surface;
- a base comprising:
- a continuous posterior rim for supporting the first optic;
- and
- a discontinuous anterior rim defining at least one recess;
- and
- a second optic supported by the base, the second optic comprising an anterior surface, a posterior surface and at least one radial extension for positioning in the at least one recess, wherein
- a distance between the anterior surface of the first optic and the posterior surface of the second optic is at least 0.25 millimeters.
A multi-part intraocular lens (IOL), comprising:
- a first optic comprising an anterior surface and a posterior surface;
- a base comprising:
- a continuous posterior rim for supporting the first optic;
- and
- a discontinuous anterior rim defining at least one recess;
- and
- a second optic comprising at least one radial extension for positioning in the at least one recess, wherein
- an anterior surface of the anterior rim and a posterior surface of the posterior rim define a base height of at least 0.7 millimeters at a radial distance of at least 3.5 millimeters.
A multi-part intraocular lens (IOL), comprising:
- a base component comprising:
- a first optic;
- a posterior rim;
- an anterior rim defining at least one recess;
- and
- one or more pedestals;
- a second optic seated on the one or more pedestals and comprising at least one radial extension extending peripherally from an optical zone of the second optic, the radial extension adapted to fit within the at least one recess to couple the second optic to the base component.
Dependencies are inferred from the claim text.