| http://www.w3.org/ns/prov#value | - Alternatively, the wettability of the surface of contact lenses made from the copolymers can be improved by the application of a wetting agent such as, for example, a dilute aqueous solution of alkyldimethylbenzylammonium chloride, by exposure of the surface to a corona discharge or by chemical treatment of the surface with a strong oxidizing agent such as nitric acid.
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