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US 6,475,240 B1Granted
Anterior chamber intraocular lens and methods for reducing pupil ovalling
AssigneeAdvanced Medical Optics, Inc.
InventorMarlene L. Paul
Life of this patent
Estimating the term…
Abstract
An intraocular lens having an optic and a plurality of fixation members coupled to the optic. The fixation members are adapted to be evenly circumferentially distributed about the anterior chamber to reduce the phenomenon of malshaping the iris, for example, pupil ovalling.
Claims22
An intraocular lens for implantation in an eye, the intraocular lens comprising:
- a resiliently deformable optic having an optical axis and being deformable to pass through a small incision into an eye;
- and
- at least three fixation members coupled to the optic and structured to be placed in an anterior chamber of a mammalian eye when the intraocular lens is in use, each of the fixation members having a distal end extending radially outwardly from the optic a distance from the optical axis, the distance being substantially the same for all of the fixation members, each of the distal ends being substantially equidistantly spaced apart from the closest circumferentially adjacent distal ends and including a structure enlarged relative to a portion of the elongated fixation member proximal of the distal end.
An intraocular lens for implantation in an eye, the intraocular lens comprising:
- a resiliently deformable optic having an optical axis and being deformable to pass through a small incision into an eye;
- a fixation system coupled to the optic and including at least three distal ends extending radially outwardly of the optic and structured to be in contact with a peripheral region of an anterior chamber of the eye;
- each of the distal ends being substantially equidistantly spaced apart from the closest circumferentially adjacent distal ends, and including a structure enlarged relative to a portion of the fixation system proximal of the distal end;
- and
- wherein, with the intraocular lens fixated in an anterior chamber of an eye having an iris, the intraocular lens is structured and sized to be effective to reduce malshaping of the iris relative to a substantially identical intraocular lens including distal ends each of which is not substantially equidistantly spaced apart from the closest circumferentially adjacent distal ends.
2 more elements
Dependencies are inferred from the claim text.