Surgical device for implantation of a deformable intraocular lens
First Claim
1. A surgical device for implantation of an artificial intraocular lens in the eye through a relatively small incision made in the ocular tissue, said device comprising a chamber in a forward end of said device;
- means for containing said intraocular lens in an unstressed state and for orienting said intraocular lens in a prescribed orientation to facilitate anterior or posterior chamber lens placement substantially perpendicular to the optical axis, said lens having a deformable optical zone portion;
means for exerting a force on said lens sufficient to deform said lens such that said optical zone portion is deformed to a diameter of 80% or less than the cross-sectional diameter of said optical zone portion in an unstressed state and to expel said lens from said device for placement of said lens in the eye.
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Accused Products
Abstract
The invention provides an improved intraocular lens structure comprising a deformable optical zone portion with prescribed memory characteristics and methods and devices for implantation of such lens in the eye. The unique optical zone portion of the lens can be deformed by compressing, rolling, folding, stretching, or can be deformed by a combination of these techniques to temporarily reduce the optical zone portion to a diameter of about 80% or less of the cross-sectional diameter of the optical zone portion in an unstressed state. After insertion into the eye, the optical zone portion returns to its original configuration, full size and fixed focal length. The inventive methods and devices for implantation permit insertion of the improved lens through a relatively small incision made in the ocular tissue, thereby providing a safer, more convenient surgical procedure and more comfortable fit for the eye.
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Citations
12 Claims
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1. A surgical device for implantation of an artificial intraocular lens in the eye through a relatively small incision made in the ocular tissue, said device comprising a chamber in a forward end of said device;
- means for containing said intraocular lens in an unstressed state and for orienting said intraocular lens in a prescribed orientation to facilitate anterior or posterior chamber lens placement substantially perpendicular to the optical axis, said lens having a deformable optical zone portion;
means for exerting a force on said lens sufficient to deform said lens such that said optical zone portion is deformed to a diameter of 80% or less than the cross-sectional diameter of said optical zone portion in an unstressed state and to expel said lens from said device for placement of said lens in the eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- means for containing said intraocular lens in an unstressed state and for orienting said intraocular lens in a prescribed orientation to facilitate anterior or posterior chamber lens placement substantially perpendicular to the optical axis, said lens having a deformable optical zone portion;
Specification