Light Adjustable Multifocal Lenses

• US 20100076554A1
• Filed: 12/01/2009
• Published: 03/25/2010
• Est. Priority Date: 01/12/1999
• Status: Active Grant

• Current Assignee: RxSight, Inc.
• Original Assignee: Calhoun Vision, Inc.
• Inventors: Jethmalani, Jagdish M., Chang, Shiao H., Sandstedt, Christian A.
• Granted Patent: US 7,988,285 B2
• Time in Patent Office: Days
• US Class Current: 623/6.240
• CPC Class Codes: A61F 2/1618 Multifocal lenses
• CPC Class Codes: A61F 2/1624 having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside
• CPC Class Codes: A61F 2/1627 for changing index of refraction, e.g. by external means or by tilting
• CPC Class Codes: A61F 2/1635 for changing shape
• CPC Class Codes: A61L 2430/16 for reconstruction of eye parts, e.g. intraocular lens, cornea
• CPC Class Codes: A61L 27/18 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: G02B 1/043 Contact lenses
• CPC Class Codes: G02C 2202/14 Photorefractive lens material
• CPC Class Codes: G02C 7/06 bifocal; multifocal ; progressive G02C7/041 takes precedence

Abstract

The invention relates to novel intraocular lenses. The lenses are capable of post-operative adjustment of their optical properties, including conversion from single focal lenses to multifocal lenses.

Claims

1. A multifocal lens comprising:

a first portion of the lens has a first focal length that provides distance vision; and

a second portion of the lens that includes a material that is optically reactive to an external stimulus and has a focal length that is adjusted to a second focal length by application of the stimulus and provides near vision;

wherein the second portion has a substantially circular shape and is located at a center of the lens, and the first portion has a substantially annulus shape and is located around the second portion.