Silicone hydrogel contact lenses having non-uniform morphology

US11827755B2 · kind B2 · utility

Assignee

• Johnson & Johnson Vision Care, Inc. · US

Inventors

• Azaam Alli · Jacksonville, US
• Donald E. Riederer · Jacksonville, US
• Alexander Guzman · Jacksonville, US
• Bernardo Santa Maria · Jacksonville, US

Key dates

• Filing date: Dec 13, 2022
• Grant date: Nov 28, 2023
• Expiry date: Dec 13, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2203/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Described is a silicone hydrogel contact lens having non-uniform morphology. The contact lens may be made from a reactive mixture comprising: a silicone-containing component; a hydrophilic component; a non-reactive polymeric internal wetting agent; and a polymerization initiator, the contact lens having an oxygen permeability of at least about 60 barrers, and wherein the molar ratio in the lens of the polymeric non-reactive internal wetting agent to silicone, without a surface treatment, is greater in the lens's surface than in its bulk.