Alcon, Inc.

Junhao Ge

Steve Yun Zhang

Yuan Chang

Daqing Wu

Feng Jing

Richard Charles Breitkopf

Augustine Twum Kumi

Yang Zheng

Frank Chang

Ying Zheng

Xinming Qian

Weihong Lang

Daryl Reece

Zach Munoz

Michelle Plavnik

Matthew D Nelson

Cornelius Daniel Niculas

David Andrew Icenogle

Ethan Leveillee

Justin Joel Aguayo

Muhammad Waqas Asif

Jack W Trieu

The invention provide a method for producing coated silicone hydrogel contact lenses in a cost-effective and environmentally friendly manner. The method is free of lens extraction step and comprises: curing thermally or actinically in a lens mold a polymerizable composition that comprises at least one hydrophilized polysiloxane vinylic crosslinker, hydroxyethyl methacrylate, C-Calkoxyethyl (meth)acrylate, at least one free-radical initiator, and at least one solvent selected from the group consisting of water, propylene glycol, and/or a low-molecular weight polyethyleneglycol; and heating the cast-molded silicone hydrogel contact lens in an aqueous coating solution to form a coated silicone hydrogel contact lens comprising a bulk silicone hydrogel material and a layer of a crosslinked hydrophilic polymeric material that is covalently attached onto the bulk silicone hydrogel material. Resultant contact lenses are optically clear and wettable and have a relatively high oxygen permeability.

Method for producing wettable silicone hydrogel contact lenses

A dosing system and method for delivery of contact lens formulation(s) to a contact lens forming mold. The system includes a carrier portion configured for holding a contact lens mold, and an alignment mandrel configured for retaining a lens formulation delivery device. The lens formulation delivery device is retained in a specified position relative to the contact lens mold for precise location of delivery of the lens formulation within the contact lens mold. A first lens formulation can be dosed to a center location in the mold, and a different second lens formulation can be dosed to a ring-shaped pattern around the center location, to form a contact lens having different center and edge characteristics.

Formulation dosing device for contact lens fabrication

Systems, devices, and methods are disclosed for fabricating a hybrid contact lens product having a lens insert embedded at a precisely controlled location within a lens body. A mold engagement and support base engages and retains a lens forming mold in a substantially fixed position. An insert placement and positioning device includes an insert pickup head with a contact face configured for releasable engagement of the lens insert and at least one suction opening in the contact face for applying suction to engage the insert on the contact face. A positioning housing interacts with the mold and/or the support base to provide precise locational positioning of the lens insert within the mold. A lens body forming material is delivered to the mold to encapsulate the lens insert.

Systems and methods for insert placement to fabricate hybrid contact lenses

The invention is directed to a colored cosmetic photochromic contact lens, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein at least the pupil section is photochromic, wherein the iris section having a colored, printed, opaque, intermittent pattern, wherein the said pattern is covered by a clear ink layer, wherein the clear ink layer is on outer surface of lens to the observer.

Colored cosmetic photochromic contact lenses

The present invention generally relates to inherently wettable silicone hydrogel contact lenses having relatively high oxygen permeability, relatively high equilibrium water content and relatively low elastic modulus. The present invention is also related to a method for making such inherently wettable silicone hydrogel contact lenses.

Silicone hydrogel contact lenses

Growing community of inventors

Shanghai, China

Junhao Ge