The silicone hydrogel lens technology used in air optix night day aqua makes this contact lens a superior monthly disposable option for vision correction by delivering an extremely high level of oxygen to the eye air optix night day aqua have been designed to offer contact lens wearers with a hectic schedule freedom from changing contacts these lenses can be worn whilst napping and are even approved to be worn for up to 30 nights of continuous wear no other lens is better designed for li