Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Eye prosthesis – Intraocular lens
Patent
1990-09-04
1992-12-15
Shay, Randy C.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Eye prosthesis
Intraocular lens
A61F 216
Patent
active
051712660
ABSTRACT:
An intraocular lens has a flexible lens body center portion formed from an optically clear material surrounded by an outer ring which is sensitive to an external force, such as a magnetic force. Utilizing the external force, the shape of the outer ring can be changed to elongate the lens body along a predetermined axis for correcting astigmatism. The outer ring can also be used to change the power of the lens by altering the spherical shape or curvature of the lens. Attached to one of the lens body and the ring is a plurality of actuator bodies of ferromagnetic material which are either permanently magnetized by the external force or are temporarily magnetized and the altered shape is retained by a shape retainer attached to the ring.
REFERENCES:
patent: 4277852 (1981-07-01), Poler
patent: 4298966 (1981-11-01), Barnet
patent: 4373218 (1983-02-01), Schachar
patent: 4512039 (1985-04-01), Lieberman
patent: 4564267 (1986-01-01), Nichimoto
patent: 4575373 (1986-03-01), Johnson
patent: 4601545 (1986-07-01), Kern
patent: 4601722 (1986-07-01), Kelman
patent: 4787903 (1988-11-01), Grendahl
patent: 4816031 (1989-03-01), Pfoff
Martin William G.
Wiley Robert G.
LandOfFree
Variable power intraocular lens with astigmatism correction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable power intraocular lens with astigmatism correction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable power intraocular lens with astigmatism correction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2089385