Soft contact lens with differentiated inner and outer functional group distribution, and method for producing the same

Abstract

The present invention discloses a soft contact lens with differentiated inner and outer functional group distribution and a method for manufacturing the same. The soft contact lens comprises a lens body, which may be a hydrogel soft lens or a silicone hydrogel soft lens. A first functional group distribution layer is formed on a convex outer surface of the lens body, and a second functional group distribution layer is formed on the first layer. The first functional group distribution layer has a first carbon content, a first oxygen content, and a first nitrogen content. The second functional group distribution layer has a second carbon content, a second oxygen content, and a second nitrogen content, in which the second oxygen content is 10% to 200% higher than the first oxygen content.