Hydrogel contact lenses with lubricated coatings on hydrogel contact lenses

摘要

Problem to be solved: to provide a non silicone hydrogel contact lens having excellent surface lubricity.Solution: a non silicon-hydrogel lens body comprising a hydrogel material containing no repeating silicone and at least 50 mol% of a repeating unit of at least one hydroxyl containing vinyl monomerContains an anchor layer of a first polymeric material having a first reactive functional group and a hydrogel layer derived from a second polymeric material having a second reactive functional groupThe hydrogel layer comprises a hydrogel coating covalently bonded onto the anchor layer via a bond formed between one first reactive functional group and one second reactive functional groupLubricity of non silicone hydrogel lens bodies has better surface lubricationWhen fully hydrated, it has a friction grade of less than about 2 and about 10 weight% to about 85% by weight and an elastic modulus of about 0.2 MPa to about 1.5 MPa after seven cycles of finger rub test.No selection