Needs To Be Replaced Often
Some contact lenses can be worn for an extended period, but, as a general rule, every lens needs to be replaced often to reduce the risk of eye infection, dry eye, and other complications. Daily disposable contact lenses need to be disposed of after they are worn for a single day, and disposable lenses should be replaced every two weeks. Traditional contact lenses should be replaced every six months.
There are many signs it's time to remove and throw away contact lenses. When the lenses are not as clear as they used to be, it may indicate bacterial growth on the lenses. Eye irritation and discomfort are also signs of damage to the contacts. When they get too old, contacts can also develop bends and permanent dents that can allow bacteria and parasites into the cornea.
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