Disclosed is an interchangeable nosepiece system for an eyeglass frame. The nosepieces system can be used to adjust the orientation of a lens on a wearer's face such that the optical centerline of each lens extends in a predetermined relationship with respect to the wearer's actual straight ahead line...http://www.google.co.uk/patents/US6056399?utm_source=gb-gplus-sharePatent US6056399 - Interchangeable nosepiece system
