The present invention relates to the discovery of new class of linear and multiarmed hydrolysable linkers and cross linkers for use in the synthesis of biodegradable polymers such as, polyesters, polyurethanes, polyamides, polyureas and degradable epoxy amine resin. The process includes the steps of forming a conductive layer on said semiconductor body then depositing an insulating layer adjacent to the conductive layer. The dispensing channel has an inlet and an outlet defining a dispensing flow path therebetween. The spoken dialog system uses the assumption dialog motivator in either a-priori or a-posteriori modes. The invention also pertains to intraocular photosensors and range-finding methods to be used with intra-ocular lens systems, and components, that provide multi-focal IOL capabilities in dynamic visual environments.