Disposable Contact Lenses
Why Get Disposable Contact Lenses?
Disposable contact lenses have become a blessing for those of us that have to wear eye contacts. Before disposables eye contact wearers had to use a special lens cleaning solution every night to prevent bacteria from growing on the eye contacts. Those that had to do this know how inconvenient this process became.
When disposable eye contacts became available those that were wearing contacts rejoiced! Finally, with improved cleaning solutions and disposables there was no need to go through the inconvenient cleaning process from earlier eye contacts.
The various soft contact lenses available are often categorized by their replacement schedule. The shortest replacement schedule is single use (daily disposable) lenses, which are disposed of each night. These may be best for patients with ocular allergies or other conditions, because it limits deposits of antigens, protein and bacteria build up. Single use lenses are also useful for people who use contacts infrequently, or for purposes (e.g. swimming or other sporting activities) where losing a lens is likely.
More commonly, contact lenses are prescribed to be disposed of on a two-week or monthly basis. Quarterly or annual lenses, which used to be very common, have lost favor because a more frequent disposal schedule allows for thinner lenses and limits deposits.
Rigid gas permeable lenses are very durable and may last for several years without the need for replacement. PMMA hard lenses were very durable, and were commonly worn for 5 to 10 years. Interestingly, a careful analysis of the materials used to manufacture many ‘daily’ disposable lenses show that they are often manufactured from the same material (e.g. silicone-hydrogel [senofilcon-A]) as the longer life disposables (monthly replacement for example), from the same company. The lenses often differ only in terms of diameter or base curve.
Recommended Discount Contact Lens Providers:
 |
