Extended Wear Contact Lenses
Contact lenses are available for two different wearing schedules.
Daily wear: meaning you remove them before sleeping.
Extended wear: overnight wear
Most extended wear lenses are proved to be worn without removal for up to seven days. Two brands are approved for up to 30days continuous wear: CIBA Visions Night and Day, and PureVision by Bausch and Lomb. Wearing contact lenses overnight even for a short period come with a greater health risk compared with nightly removal.
These new revolutionary lenses use a special material called silicone hydrogel. They allow up to six times more oxygen through to the eye than standard lenses, enabling the eye to remain healthy and providing excellent comfort. You can reduce the risk of developing an infection by following the Optometrist’s instructions for lens replacement and care. Studies have shown that most of the infections and complications are related to improper cleaning and disinfecting.
The lenses are usually fitted as daily wear lenses and if the eyes show no sign of ill effects, overnight wear is commenced.
If you use continuous wear lenses, we recommend an up to date pair of spectacles for when you need to remove the lenses, such as if the eyes are irritated or during periods of ill health. It is now recognised that swimming while wearing contact lenses, showering, hot- tub use and smoking can be associated with complications and should generally be avoided.