All lenses are disposable. They just differ in how often you dispose of them.
The major advantage of Soft Contact Lenses is that they are comfortable almost immediately.
They become coated with your tears, mucin, lipid, protein, etc. The bottom line is that they become dirty. Years ago, they started out as a pair was intended to last a year, but what we dound is that as people wore their lenses longer, they had more problems. That is why most soft lenses are disposed of on a regular basis; daily, 2 week, 1 month, etc.
Soft lenses are FDA approved to be worn every day and to be replaced after a specific time, for example, there are lenses that are approved for 2 weeks, for a month, for 3 months, and then you begin with a new one. Lenses that are worn as extended wear (worn during the day and at night while sleeping) cause more problems than lenses that are either worn only during the day, or lenses such as orthokeratolgy molding lenses that are only worn at night.
Soft lenses that are daily disposable lenses must be cleaned after every use. As a lens get older, there are more deposits from your own tears that are on the lenses. When someone wears a lens for longer than they are approved for, then problems associated with contact lens over-wear can occur.
As a lens gets older, there are more deposits from your own lens that stays on the contact lens. More deposits means more potential for problems. When someone does not clean their lenses or does not replace them when they should be replaced, are at a greater risk for problems. If you or your child can keep to a regimen, these are great. If not, then this can lead to problems.
What kind of problems?
- Corneal Ulcer
- Giant Papillary conjunctivitis
These are some examples of problems that we want to help you solve BEFORE they ever become a problem.