AIR OPTIX for ASTIGMATISM offers the highest oxygen transmissibility of any available soft toric lens, so eyes can stay whiter, healthy-looking and comfortable, no matter how long lenses are worn each day. This advanced technology helps protect you from the signs and symptoms of Corneal Oxygen Deficiency. AIR OPTIX for ASTIGMATISM feature the breakthrough precision 8/4 design, which helps to minimize the interaction between the lens and the lower lid for increased comfort. The lenses also feature a patented surface treatment to help resist deposits, which can be a problem for contact lens wearers. Made for daily or extended wear up to 6 nights for near/ far-sightedness and astigmatism. Risk of serious eye problems (i.e., corneal ulcer) is greater for extended wear.