METHODS FOR TAILORING THE REFRACTIVE INDEX OF LENSES

Title:

METHODS FOR TAILORING THE REFRACTIVE INDEX OF LENSES

Document Type and Number:

WIPO Patent Application WO/2015/038620

Kind Code:

A3

Abstract:

Methods and devices for altering the power of a lens, such as an intraocular lens, are disclosed. In one method, the lens comprises a single polymer matrix containing crosslinkable pendant groups, wherein the polymer matrix increases in volume when crosslinked. The lens does not contain free monomer. Upon exposure to ultraviolet radiation, crosslinking causes the exposed portion of the lens to increase in volume, causing an increase in the refractive index. In another method, the lens comprises a polymer matrix containing photobleachable chromophores. Upon exposure to ultraviolet radiation, photobleaching causes a decrease in refractive index in the exposed portion without any change in lens thickness. These methods avoid the need to wait for diffusion to occur to change the lens shape and avoid the need for a second exposure to radiation to lock in the changes to the lens.

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Inventors:

BRESLER HERBERT S (US)
EDWARDS ERIK (US)
HEINTZ AMY M (US)
LAUDO JOHN S (US)
MORROW C ALEXANDER (US)
RISSER STEVEN M (US)

Application Number:

PCT/US2014/054955

Publication Date:

May 14, 2015

Filing Date:

September 10, 2014

Export Citation:

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Assignee:

BATTELLE MEMORIAL INSTITUTE (US)

International Classes:

B29D11/00; A61F2/16; G02B1/04; G02C7/04

Foreign References:

US20110245919A1

2011-10-06

Attorney, Agent or Firm:

KLEIN, Richard M. (1228 Euclid Avenue Fifth FloorCleveland, Ohio, US)

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