Lens system and methods for power adjustment
AssigneePowerVision, Inc.
InventorsVictor Esch, John H. Shadduck
Life of this patent
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Abstract
A lens is provided that having optical parameters that may be adjusted in-situ, and is particularly useful as an IOL for use in cataract patients that require an adjustment in the optical power of the lens post-implantation. In one embodiment, the lens body carries an array of interior fluid-filled cells in which fluid is controllably moved upon application of energy from an external source to move a fluid media into or out of the cells to thereby alter the lens surface shape.
Claims29
A lens comprising:
- a lens portion defining an anterior surface layer and a posterior surface layer;
- an interior of the lens portion comprising an array of deformable cells each defining a volume of a selected fluid therein, each deformable cell in substantial engagement with either the anterior or posterior surface layer;
- means for controllably causing fluid flow to alter the volume in at least a portion of the array of deformable cells to thereby controllably deform the anterior or posterior surface layer and alter optical parameters of the lens.
A power adjustable lens for vision correction, comprising:
- a resilient lens body defining an anterior curvature and a posterior curvature;
- an interior portion of the lens body including an array of deformable fluid-filled structures that engage a surface element of the lens body;
- means for controllably causing a fluid to flow into or out of each fluid-filled structure to thereby controllably deform and alter an optical parameter of the lens.
A method of adjusting the power of a lens used in vision correction, comprising:
- providing a lens body with a plurality of deformable fluid-filled structures in an interior of the lens that engage a surface element of the lens body;
- and
- controllably altering the volume of the fluid within selected fluid-filled structures thereby deforming the fluid-filled structure and the engaged surface element to thereby alter an optical parameter of the lens.
A power adjustable lens for vision correction, comprising:
- a lens body defining a resilient anterior surface element and a optical axis;
- one or more resilient structures, each resilient structure having a fluid-filled interior chamber therein and extendable relative to optical axis between a first retracted position and a second extended position;
- a reservoir;
- and
- flow control means for causing flow of an index-matching fluid into or out of each resilient structure to deform the resilient anterior surface element and alter an optical parameter of the lens.
Dependencies are inferred from the claim text.