A contact lens is disclosed having a front surface and a back surface. The lens contains a continuously varying aspheric surface on one or more of these surfaces. ...http://www.google.es/patents/US20020036748?utm_source=gb-gplus-sharePatente US20020036748 - Multifocal contact lens with aspheric surface
Número de solicitud: 09/881,548 Número de publicación: US 2002/0036748 A1 Fecha de presentación: 14 Jun 2001 Patente emitida: US6808262 ( Fecha de emisión 26 Oct 2004)
