Novartis Ag

Ciba-Geigy Corporation

Ciba Vision Corporation

Novartis Pharma Gmbh

Ellen Marie Ajello

Robert Allen Janssen

Dieter Lohmann

Angelika Maria Domschke

Yasuo Matsuzawa

Jens Hopken

Michael Nelson Wilde

Richard D Auten

Thomas E Shank

Glenn S Nomura

Ping I Lee

A method and apparatus for removing a polymeric contact lens from a mold comprising lowering the temperature of the contact lens with a cryogenic material, such as liquid nitrogen, to a temperature and for a time sufficient for the lens to release from the mold without the application of external forces.

Deblocking contact lenses

A method of making an ophthalmic lens including the steps of: preparing a polymerizable composition comprising excessive oxygen content; contacting the polymerizable composition with a gas that is inert or substantially inert to the polymerizable composition, and deoxygenating or partially deoxygenating the polymerizable composition; conveying all or part of the polymerizable composition to an ophthalmic lens mold; polymerizing all or part of the polymerizable composition and obtaining a polymeric ophthalmic lens, and the lens produced by such process.

Ophthalmic lens production process

The invention relates to a process for modifying the surface characteristics of a preformed polymer substrate to impart altered properties thereto by graft polymerization on the substrate which includes: placing the polymer substrate in a plasma to form free radicals on the substrate; contacting the substrate having free radicals with oxygen to form hydroperoxy groups on the surface of the substrate; and graft polymerizing an ethylenically unsaturated monomer onto the surface of the polymer substrate.

Process for graft polymerization on surfaces of preformed substates to

A dimensionally stable hydrogel contact lens of polyvinyl alcohol having an equilibrium water content of between about 70 to about 80 weight percent, based upon the total swollen lens weight, said lens having been annealed in a mold essentially conforming to the contact lens dimensions under substantially ambient non-drying setting conditions in the presence of an aqueous-organic annealing promoter solvent, for a period of time substantially sufficient to reach annealing equilibrium.

Preparation of stable polyvinyl alcohol hydrogel contact lens

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Decatur, GA, United States of America

Ellen Marie Ajello