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US 4,536,897 AGranted
Intraocular lens
OwnerRobert M. Powellinventor
Life of this patent
Estimating the term…
Abstract
A new type of intraocular lens is provided for implantation in the eye following cataract extraction. The new lens is uniquely structured at the edge of the lens optic to provide advantages both in implanting and repositioning the lens and in avoiding blocking of lens perforations.
Claims14
An intraocular lens useful for implantation or positioning in the chamber of an eye after capsular extraction, comprising:
- an imperforate lens optic having an anterior face and a posterior face, the circumference of each face having a continuous curving common edge configured with at least one continuous curving axial socket recess open to said edge and faces, and haptic support means adapted for rotating the lens and centering the lens optic on the optical axis, the socket recess having bearing surfaces of a size adapted to receive and accommodate in close-fitting relation by open edge-access the distal end of a surgical tool to thereby enable the lens to be rotated or dialed and thus moved by the tool in the plane of the lens for positioning of the lens in a surgical procedure.
An intraocular lens useful for implantation or positioning in the chamber of an eye after capsular extraction, comprising:
- a lens optic having an anterior face and a posterior face, the circumference of each face having a continuous curving common edge configured with at least one axial socket recess open to said edge and faces, and haptic support means adapted for rotating the lens and centering the lens optic on the optical axis, the socket recess having bearing surfaces adapted to receive the distal end of a surgical tool and to be moved by the tool for positioning of the lens in a surgical procedure and being undercut from the edge and configured to receive the end of a surgical tool in close fitting relation to accommodate implantation or repositioning in a surgical procedure.
Dependencies are inferred from the claim text.