SILICONE HYDROGEL LENSES WITH WATER-ENRICHED SURFACES Russian patent published in 2020 - IPC G02C7/04 G02B1/04 

Abstract RU 2714143 C1

FIELD: satisfaction of human vital needs.

SUBSTANCE: invention relates to silicone hydrogel contact lenses. Disclosed is a silicone hydrogel contact lens having a layered structural configuration: comprising a low-water silicone hydrogel core (or bulk material), completely closed with a layer of water-enriched (for example, having water content exceeding 80 %) hydrogel, completely or mainly not containing silicon.

EFFECT: disclosed hydrated silicone hydrogel contact lens has high oxygen permeability, which is required to provide a healthy state of the eye cornea, and a soft, water-enriched smooth surface to provide comfort when worn during the whole day.

20 cl, 9 dwg, 11 tbl, 33 ex

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RU 2 714 143 C1

Authors

Qiu Yongxing

Pruitt John Dallas

Thekveli Sibichen

Tucker Robert Carey

Nelson Jared

Dates

2020-02-12Published

2019-06-05Filed