Bausch+Lomb's new line of PureVision contact lenses provide crisper vision and improved comfort. PureVision 2 for Astigmatism are designed with the use of special Auto Align Design, which keeps them stable on the eye. It's very important in toric contact lenses that they don't rotate on the eyes in order to provide crisp and clear vision. What's more, these lenses are among the thinnest on the market, which makes them very comfortable throughout the whole day. They can be used for extended periods of time.