Bausch-lomb Incorporated

Rajan S Bawa

Dennis Hahn

Frank Tasber

Mahendra P Nandu

William G Deichert

Yu-Chin Lai

Dominic V Ruscio

A method of treating contact lenses made from polymerizable materials by providing supercritical fluids to the lenses.

Treatment of contact lenses with supercritical fluid

A process for preparing silicone hydrogel contact lenses where machining operations are employed to produce a lens having a desired final shape. The silicone hydrogel contact lenses are prepared by: providing a monomeric mixture comprising a silicone-containing monomer, a hydrophilic monomer and an organic diluent; charging the mixture to a mold and curing the formulation in the mold to obtain a shaped article; removing organic diluent from the shaped article to improve machineability of the article; and machining the shaped article to obtain a contact lens having a desired configuration.

Process for making silicone containing hydrogel lenses

An improved process for spincasting contact lenses with differently shaped concave lens surfaces from the same mold design comprises providing molds with uniformly shaped concave surfaces, and spincasting in the molds a series of polymerizable mixtures. Contact lenses with differently shaped concave lens surfaces are obtained by varying the ratio of the monomers and an organic diluent in the polymerizable mixtures.

Spincasting process for producing a series of contact lenses having

An ocular insert for insertion into the cul de sac of the eye which is a substantially circular disc having a concave posterior surface and a convex anterior surface with a radius of curvature less than that of the sclera and a center thickness of less than about 1.5 mm.

Ophthalmic article

A sustained-release polymeric hydrogel dosage form useful for topical, systemic or transdermal administration of a medicinal agent comprising a cross-linked, polymerized hydrophilic polymer, an ion-exchange resin, a cross-linking agent, an optical hydrophobic polymer and said medicinal agent in a therapeutically effective amount.

Sustained release formulation containing an ion-exchange resin

While polymerizing a contact lens monomer in a mold, grooves or other surface configurations are formed on the resulting polymeric lens surface by irradiating the monomer through a mask pattern which corresponds to the grooves or other desired configurations.

Manufacture of polymeric contact lenses

A tinted soft contact lens such as a hydrated hydrogel lens having a variegated iris pattern is prepared by forming an iris pattern on the lens with a viscous paste which can contain an unoxidized vat dye. The lens is treated with a developer solution to obtain a tinted lens having an iris pattern which can be clear or different in color or in hue from the surrounding iris area.

Method of forming iris variegation patterns on contact lenses

A sustained-release polymeric hydrogel dosage form useful for topical, systemic or transdermal administration of a medicinal agent comprising a cross-linked, polymerized hydrophilic polymer, an amino acid polymer, a cross-linking agent, and an optional hydrophobic monomer and/or a chain regulator in conjunction with a lower alkyl (C.sub.1 -C.sub.4), polar solvent and said medicinal agent in a therapeutically effective amount.

Sustained-release formulation containing an amino acid polymer with a

Cosmetic contact lenses, which are tinted with daylight fluorescent pigments in the iris area, can change the wearer's apparent iris color to any desired color, including changing a dark iris to a lighter color such as blue or green.

Contact lenses having fluorescent colorants and apparatus for making

A sustained-release polymeric hydrogel dosage form useful for topical, systemic or transdermal administration of a medicinal agent comprising a cross-linked, polymerized hydrophilic polymer, an amino acid polymer, a cross-linking agent, an optional hydrophobic polymer and said medicinal agent in a therapeutically effective amount.

Growing community of inventors

Ft. Worth, TX, United States of America

Rajan S Bawa