Verfahren zum Anbringen einer opaken Färbung.

摘要

A method is provided for tinting a hydrogel contact lens whereby the tinting effect is not appreciably affected by the underlying color of the iris of the wearer's eyes. The method comprises the steps of providing a tube (12) with mask means (24, 26), orienting the tube open end upward, adding a fluid column to the interior of the tube (12), dropping the lens (L) into the fluid, permetting the lens to center and to rest on the mask (26), inserting a mandrel (66) to secure the lens, opaquing the unmasked portion of the lens, retaining the lens (L) in the tube (12) and tinting the opaqued portion of the lens (L).