Optically clear soft contact lenses of a polyoxirane crosslinked polyvinyl alcohol having a weight average molecular weight of at least 8,000 and degree of hydrolysis of at least 91 % and their preparation are disclosed. The materials are characterized by their ability to be boiling water sterilized, and their high water content, high oxygen permeability and high optical clarity.
本发明公开了一种重量平均分子量至少为 8000、
水解度至少为 91% 的聚
环氧乙烷交联聚
乙烯醇光学透明软性隐形眼镜及其制备方法。这种材料的特点是能够进行沸
水灭菌,并且具有高含
水量、高透氧性和高光学清晰度。