Soft lenses are very comfortable and come in a variety of types, depending on the wearer’s needs. Conventional soft lenses are worn during the day, and cleaned and stored at night. Usually once a week the lenses must be cleaned using an enzymatic cleaner, which removes protein deposits. These lenses can last for a year or more if you take good care of them and your prescription stays the same.
Note that with the introduction of healthier, cleaner, and more frequently disposed of soft lenses, conventional lenses have fallen out of favor.