Contact Lens Types
There are two general types of contact lenses: hard and soft.
Hard Contact LensesThe hard lenses most commonly used today are rigid, gas-permeable lenses (RGP). They are made of plastic, silicone and/or polymers. Hard lenses hold their shape, but permit the free flow of oxygen through the lenses to the cornea. RGP lenses are often the best choice for individuals with astigmatism, because soft lens will not maintain a shape to provide sharp vision. Hard lenses may also be more appropriate for people with allergies or those who often notice protein deposits forming on their contacts.
Soft Contact LensesSoft contact lenses are made of soft, pliable plastics that permit oxygen to pass through to the cornea. Soft contact lenses are often easier to adjust to and are more comfortable than rigid gas permeable lenses. Generally soft contact lenses are available in to varieities: extended wear and disposables.Extended wear contact lenses are available for overnight or continuous wear ranging from 1-6 days and up to 30 days. It is extremely important for the health of the eyes to have a rest without lenses for at least one night following each scheduled removal. Most soft contact lens wearers are prescribed disposable lenses that are replaced on a more frequent schedule. Disposable, typically means used once and discarded. With a true daily wear disposable schedule, a brand new pair of lenses is used each day.
Ask our optometrists about which type of contact lenses they would recommend for your health and lifestyle.