Invention Grant
- Patent Title: Silicone hydrogel lenses with water-rich surfaces
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Application No.: US14564660Application Date: 2014-12-09
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Publication No.: US09244200B2Publication Date: 2016-01-26
- Inventor: Yongxing Qiu , John Dallas Pruitt , Sibichen J. Thekveli , Robert Carey Tucker , Jared Nelson
- Applicant: Novartis AG
- Applicant Address: CH Basel
- Assignee: Novartis AG
- Current Assignee: Novartis AG
- Current Assignee Address: CH Basel
- Agent Jian Zhou
- Main IPC: G02C7/00
- IPC: G02C7/00 ; G02B1/10 ; G02B1/04 ; G02C7/04

Abstract:
The invention is related to a hydrated silicone hydrogel contact lens having a layered structural configuration: a lower water content silicone hydrogel core (or bulk material) completely covered with a layer of a higher water content hydrogel totally or substantially free of silicone. A hydrated silicone hydrogel contact lens of the invention possesses high oxygen permeability for maintaining the corneal health and a soft, water-rich, lubricious surface for wearing comfort.
Public/Granted literature
- US20150092156A1 SILICONE HYDROGEL LENSES WITH WATER-RICH SURFACES Public/Granted day:2015-04-02
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