Several different types of contact lenses are available to treat vision problems. Consult an eye doctor who is willing to work with you to select the best type of lens for your needs and lifestyle.
Hard contact lenses
- Conventional hard lenses (PMMA): Conventional hard contact lenses are made of a fairly stiff plastic (polymethyl methacrylate, or PMMA), which does not mold to the shape of the eye
- Rigid gas-permeable (RGP) lenses: Gas-permeable lenses cost more than conventional hard lenses and are somewhat less durable, but they are more comfortable than conventional hard lenses.
Soft contact lenses
- Daily-wear lenses: Daily-wear soft lenses are removed and cleaned at night and reinserted in the morning.
- Extended-wear lenses: Extended-wear lenses can be worn day and night. After several days, you take them out, clean them, and wear them again.
- Disposable lenses: Disposable soft lenses were designed to be worn for up to several weeks and then discarded.
Read the original article on webmd.com