| 摘要 |
PROBLEM TO BE SOLVED: To significantly reduce or prevent surface distortion in an ophthalmic lens resulting from the extraction process of silicone hydrogel ophthalmic lens products. SOLUTION: Methods of producing silicone hydrogel ophthalmic lenses include contacting one or more delensed silicone hydrogel ophthalmic lens with a liquid composition that contains alcohol, water, and a surfactant. The methods can be steps of an extraction/hydration process used in the production of silicone hydrogel contact lenses. In some examples, contacting silicone hydrogel ophthalmic lens products with a liquid composition that contains alcohol, water, and a surfactant can significantly reduce or prevent surface distortion of the ophthalmic lens resulting from the extraction process. Some methods include subsequently contacting the silicone hydrogel ophthalmic lens with a liquid composition including essentially of water and a surfactant. COPYRIGHT: (C)2009,JPO&INPIT |
