Benefits of Proclear 1 Day contact lenses: Daily disposable lenses: Can be worn for up to 12 hours a day. Ideal for those who suffer from dry eyes. PC technology™ ensures hydrated and healthy eyes. Breathable lenses that allow oxygen to flow freely through to your eyes. Thanks to CooperVision's patented PC Technology™, water molecules actually become a part of the Proclear 1 day contact lens, creating a natural resistance to dryness, which means the lens remains fresh and comfortable all day. The only contact lens material with FDA clearance. Improved comfort for wearers who experience mild discomfort or symptoms relating to dryness during lens wear.