SILICONE HYDROGEL LENSES WITH WATER-ENRICHED SURFACES Russian patent published in 2022 - IPC G02C7/04 

Abstract RU 2775370 C1

FIELD: medical technology.

SUBSTANCE: invention relates to ophthalmology. The essence of the invention lies in the fact that a hydrated silicone hydrogel contact lens has a layered structural configuration and contains a silicone hydrogel core (or volume material) with a low water content, completely covered with a layer of water-enriched (for example, having a water content exceeding 80%) hydrogel, completely or mostly free of silicon.

EFFECT: providing the possibility of creating a hydrated silicone hydrogel contact lens with high oxygen permeability, which is necessary to ensure a healthy state of the cornea of the eye, and a soft, water-enriched smooth surface to ensure wearing comfort.

29 cl, 9 dwg, 12 tbl

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RU 2 775 370 C1

Authors

Qiu Yongxing

Pruitt John Dallas

Thekveli Sibichen

Tucker Robert Carey

Nelson Jared

Dates

2022-06-30Published

2021-07-28Filed