Patent ID: 9297930
Filing Date: 2016-03-29
CPC Classification: A61F,C08F,G02B,G02C

Claim Text:
1. A low water content soft lens for eye, comprising a base material, a layer made of an acidic polymer and a basic polymer being formed on at least a part of a surface of the base material, wherein the water content of the lens is 1% or less; wherein the layer made of an acidic polymer and a basic polymer is composed of one layer made of an acidic polymer and one layer made of a basic polymer, so two layers in total; or the layer made of an acidic polymer and a basic polymer is composed of one or two layers made of an acidic polymer, and one or two layers made of a basic polymer, and three layers in total; wherein the base material contain, as a main component, a polymer of the following component A, or a copolymer of the following components A and B: the component A is a polysiloxane compound represented by the following formula (A1): wherein X the layer made of an acidic polymer and a basic polymer contains two or more kinds of acidic polymers and one or more kinds of basic polymers.