After the accumulated wearing period prescribed by your Master Eye Associates professional, your contact lenses should be discarded. By replacing your contact lenses on a regular basis, lens deposits, which can affect vision and cause irritation and discomfort to the eye, have little chance to build up over time as with conventional lens wear. When you discard the lens, you dispose of potential deposit buildup problems. Remember that the first thing that happens before a contact lens related eye infection is that the bacteria accumulate onto the surface of the soft lens and then begin colonization. Clean, sterile, fresh, new lenses minimize this from ever being possible.