PureVision contacts by Bausch & Lomb can be used as either a daily lens or as a 30 day extended wear contact lens and are made using a unique material called AerGel. AerGel helps to keep the vision sharp while also maintaining its comfort. This material also helps keep a natural level of oxygen going to the eye as though you were wearing no lens at all. PureVision lenses are extremely easy to use and are slightly tinted to make them easier to see and maneuver when putting them in. Another comfort feature these contact lenses have is their rounded edges, making them more comfortable to wear for extended periods of time. Also, the function of the lens design is that it helps to reduce spherical aberration (a common occurrence that makes the vision hazy or blurry). PureVision contact lenses are great for those who want some flexibility in how they wear their lenses; making them ideal for travel, school, and long work hours.