Air Optix Aqua Multifocal contact lenses are used to correct presbyopia. They are highly oxygen permeable lenses that can be worn for up to a month and are made from the new silicone hydrogel material lotrafilcon B with a water content of 33%. The Aqua wetting technology employed here allows the eye's surface to benefit from excellent wetting, making the lenses comfortable to wear for long periods of time, and thanks to the Precision Transition Design technology used, they provide wearers with clear vision at all distances.