公开(公告)号：US20230374306A1

公开(公告)日：2023-11-23

申请号：US18321435

申请日：2023-05-22

Applicant: Alcon Inc.

Inventor： Frank Chang ,  Troy Vernon Holland ,  Adam K. Sniady ,  Houliang Tang

IPC: C08L83/04 ,  C08J3/075

CPC classification number: C08L83/04 ,  C08J3/075 ,  C08J2383/04 ,  C08J2471/02

Abstract: Described herein is UV/HEVL-absorbing contact lens of the invention comprises a bulk hydrogel material that comprises repeating units of at least one UV-absorbing vinylic monomer, repeating units of at least one UV/HEVL-absorbing vinylic monomer, and derivatives of a reactive Cu(II)-porphyrin present in selected amounts and at a selected ratio. A UV/HEVL-filtering contact lens of the invention not only can provide Class I UV protection against UVA and UVB rays (i.e., filtering more than 90% of UVA and 99% of UVB rays) but also can mimics the natural crystalline lens of a human eye in providing HEVL protection.

公开(公告)号：US20230364832A1

公开(公告)日：2023-11-16

申请号：US18308210

申请日：2023-04-27

Applicant: Alcon Inc.

Inventor： Frank Chang ,  Troy Vernon Holland ,  Houliang Tang ,  Adam K. Sniady

IPC: B29C39/02 ,  B29C39/00 ,  B29C39/26 ,  B29C39/36 ,  B29D11/00 ,  G02B1/04

CPC classification number: B29C39/026 ,  B29C39/006 ,  B29C39/26 ,  B29C39/36 ,  B29D11/00038 ,  G02B1/043 ,  B29K2101/10

Abstract: Described herein is a cost-effective and time-efficient method for producing UV- and HEVL-absorbing silicone hydrogel contact lenses capable of blocking ultra-violet (“UV”) radiation and high-energy-violet light (HEVL) with wavelengths from 380 nm to 440 nm, thereby protecting eyes to some extent from damages caused by UV and HEVL radiation. This invention also provides UV- and HEVL-absorbing absorbing contact lenses made according to a method of the invention.