A contact lens is made by graft polymerization of a contact lens surface by introducing a peroxide on a contact lens substrate surface by a discharging treatment producing a radical and by adding an appropriate amount of a reducing agent to the polymerization system and removing dissolved oxygen in the...http://www.google.co.uk/patents/US5391589?utm_source=gb-gplus-sharePatent US5391589 - Contact lens and method of producing a contact lens
