Fixation member for an intraocular lens

Details Fixation member for an intraocular lens Fixation member for an intraocular lens

1991-05-14

1992-10-06

Frinks, Ronald

Prosthesis (i.e., artificial body members), parts thereof, or ai

Eye prosthesis

Intraocular lens

A61F 216

Patent

active

051527898

ABSTRACT:
An intraocular lens comprising a deformable optic and a fixation member for use in supporting the optic in the eye. The fixation member includes an annulus surrounding the optic and a plurality of resilient struts interconnecting the optic with the annulus. The struts tend to be compressively loaded by the posterior capsule of the eye after implantation. To prevent buckling of the resilient struts in an axial direction due to the imposed compressive loads, the struts are curved in a circumferential direction when in an unloaded state, thereby being predisposed to further bow in the same circumferential direction upon imposition of the compressive load. This predisposition to bow circumferentially avoids severe problems incurred if the struts are permitted to buckle axially, such as tilting of the optic and impaired vision for the patient.

REFERENCES:
patent: 2714721 (1955-08-01), Stone, Jr.
patent: 4655775 (1987-04-01), Clasby, III
patent: 4693715 (1987-09-01), Abel, Jr.
patent: 4804361 (1989-02-01), Anis
patent: 4888013 (1989-12-01), Ting et al.

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