Handling of these lenses may not be as easy. These lenses should be replaced every year at least once a year. Protein deposits, which often build up with time and cause eye problems, are less of an issue compared to daily wear lenses since lenses are discarded more frequently. A more simplified cleaning and disinfecting process may be used. Tearing or losing a lens is no big deal.
Spare lenses are readily available.
The main disadvantage is disposable lenses are more expensive than the daily wear. The pros and cons are similar to daily wear and disposable soft lenses. The main difference is the fitting of these lenses is more difficult and requires more office visits. Extended-wear lenses are RGP or soft lenses that can be worn overnight. Protein deposits and bacteria can build up on the lens, thus, increasing the risk for complications, such as eye infections.