Method for imparting hydrogel contact lenses with desired...

Details Method for imparting hydrogel contact lenses with desired... Method for imparting hydrogel contact lenses with desired...

G - Physics

02

B

G02B 1/04 (2006.01) B29D 11/00 (2006.01)

Patent

CA 2678598

A cost-effective method for making hydrogel contact lenses with desired properties, such as antimicrobial property and/or increased surface hydrophilicity. The method comprises a step of contacting a dry or unhydrated hydrogel contact lens with an aqueous solution (or hydrating solution) containing silver nanoparticles and/or a lubricant or wetting agent. By using a method of the invention, resultant hydrogel contact lenses can have antimicrobial capability and/or enhanced lens wearer's comfort.

L'invention concerne un procédé économique pour fabriquer des lentilles de contact en hydrogel dotées de propriétés souhaitées, telles que des propriétés antimicrobiennes et/ou une hydrophilie de surface accrue. Le procédé comprend une étape consistant à mettre une lentille de contact en hydrogel sec ou non hydraté en contact avec une solution aqueuse (ou une solution d'hydratation) contenant des nanoparticules d'argent et/ou un agent lubrifiant ou mouillant. L'utilisation d'un procédé de l'invention permet d'obtenir des lentilles de contact en hydrogel qui présentent des propriétés antimicrobiennes et/ou un meilleur confort pour le porteur.

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