A tracking system for tracking a plurality of items or boxes of items defines a plurality of levels that may be physically and logically organized in a hierarchy. The plasma treatment system has a chamber, where a vacuum is maintained. A portion of the first silicon layer and the first oxide layer is etched to create an exposed portion of the first side. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. One or more gutters in the floormat communicate with the distal ends of the channels.