Bausch-lomb Incorporated

Other

Michael M Vayntraub

Richard R Martin

The present invention is directed toward a multifocal contact lens having an improved front-surface lens design, which design can be used either as a stand-alone multifocal design for both distance- and near-vision correction or, in combination with a back-surface multifocal design, as a means to provide additional power for near-vision correction. In one embodiment of the invention, the contact lens has a front surface comprising a central elliptical curve, a mid-peripheral polynomial curve, and a lenticular spherical curve.

Multifocal lens article

The present invention relates to a contact lens having a back side comprising a central zone and a peripheral zone located about the central zone, wherein the peripheral zone has a surface defined by at least one of a sine or cosine function. Systems and methods for making such lenses are also provided.

Contact lens and method for making the same

The present invention relates to a contact lens having a back side comprising a central zone and a peripheral zone located about the central zone, wherein the peripheral zone has a surface defined by a logarithmic function. Systems and methods for making such lenses are also provided.

The present invention relates to a contact lens having a back side comprising a central zone and a peripheral zone located about the central zone, wherein the peripheral zone has a surface defined by an exponential function. Systems and methods for making such lenses are also provided.

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Rochester, NY, United States of America

Michael M Vayntraub