INTRAOCULAR LENS Russian patent published in 2022 - IPC A61F2/16 A61L27/16 A61L27/50 C07C69/675 

FIELD: optical technology.

SUBSTANCE: group of inventions relates to the field of intraocular lenses. An intraocular lens containing a polymeric lens material that is obtained from a polymerizable composition containing: (a) one aromatic acrylate monomer, which is an acrylate containing an aromatic ring, where the specified acrylate monomer containing an aromatic ring contains a phenoxy group, an alkylene group containing 2 or fewer carbon atoms, and an acrylate binding site; (b) alkoxyalkylmethacrylate monomer containing an alkoxyalkyl group with 4 or fewer carbon atoms; (c) an alkylacrylate monomer containing an alkyl group with 1-20 carbon atoms; (d) a hydrophilic monomer, where said hydrophilic monomer is an alkyl methacrylate containing a hydroxyl group containing an alkyl group of 1-20 carbon atoms; and (e) a cross-linked monomer, where said cross-linked monomer is selected from butanediol diacrylate, ethylene glycol diacrylate, propylene glycol diacrylate. In this case, the molar ratio H:C in the specified polymerized composition is from 12:1 to 15:1, where the molar ratio is the molar amount H of the specified hydrophilic monomer : the molar amount C of the specified cross-linked monomer, and the value H×C of the specified lens material is more than 3.6×10^-3 and less than 4.2×10^-3, when in this case, the value H×C is the product of the molar amount H of the specified hydrophilic monomer and the molar amount C of the specified cross-linked monomer in the specified polymerized composition, and where the molar ratio MA/A of all methacrylate monomers to all acrylate monomers in the specified polymerized composition is from 0.30 to 0.70. Variants of the intraocular lens are also revealed.

EFFECT: group of inventions provides a material for an intraocular lens that demonstrates flexibility, does not undergo hydrolysis, demonstrates transparency, shape recoverability, high refractive index, high fracture toughness, optimal stickiness and minimal glistening.

13 cl, 6 dwg, 9 tbl, 60 ex