Disposable soft lenses are much more popular than conventional soft lenses. These lenses are worn for a period of time and then, of course, thrown away. Disposables may be designed to last for one day or up to a couple of weeks. These are perfect for many patients who were told they could not wear contact lenses because of allergies or mild dry eye conditions. They have a low cost per lens and are also popular for athletes and hobbyists who do not necessarily want to wear contact lenses every day.