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US 2003/0151831 A1Published application
Light adjustable multifocal lenses
OwnerChristian A. Sandstedt, Jagdish M. Jethmalani +1inventors
InventorsChristian A. Sandstedt, Jagdish M. Jethmalani, Shiao H. Chang
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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.
Claims20
A multifocal lens comprising:
- a first portion of the lens has a first focal length;
- 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;
- wherein the first focal length is different from the second focal length.
A method for preparing a multifocal lens comprising:
- preparing a lens having a modifying composition (MC) dispersed therein, wherein the modifying composition is capable of stimulus-induced polymerization;
- exposing a portion of the lens to an external stimulus that causes changes in the optical properties that change a focal length of the portion of the lens;
- whereby the exposed portion of the lens has a first focal length and the unexposed portion of the lens has a second focal length that is different from the first focal length.
Dependencies are inferred from the claim text.