TORIC OPHTHALMIC CONTACT LENS (EMBODIMENTS) Russian patent published in 2024 - IPC A61F2/14 G02C7/02 G02C7/04 

Abstract RU 2813074 C2

FIELD: medicine.

SUBSTANCE: toric lens comprises a main portion having a toric surface and a spherical surface located opposite the toric surface, the main portion comprising an eyelid stabilization structure having a thickness of less than 200 mcm, the spherical surface being configured to provide spherical refraction of the lens, the toric surface being configured to providing a cylindrical lens refraction that does not fully correct the cylindrical refraction of the eye due to astigmatism, and wherein the spherical lens refraction is configured to position a minimum circle of the ophthalmic lens on or adjacent to the user's retina at a target alignment angle.

EFFECT: use of this group of inventions will improve lens correction and freedom of mechanical movement to increase the comfort of wearing the lens.

22 cl, 5 dwg

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RU 2 813 074 C2

Authors

Chen, Minkhan

Dates

2024-02-06Published

2020-02-12Filed