extended lenses in particular pose a much greater risk than daily wear lenses. sfx and theatrical though extended-wear lenses are extremely thin and allow some oxygen--necessary for healthy eyes--to reach the cornea, they are worn continuously, including at night while the eyelid is closed. bacteria can easily grow more easily under these conditions. twenty-one in 1,000 extended lens wearers develop infections as opposed to 4 in 1,000 daily soft lens wearers. to reduce this risk, eye care professionals now recommend removing extended lenses at night. in addition, newer versions of extended lenses being developed may offer increased oxygen exchange and pose less risk. orange and sclera disposable lenses may also help to prevent infection, since the wearer is guaranteed a clean pair of lenses every few weeks or every day.

extended lenses in particular pose a much greater risk than daily wear lenses. sfx and theatrical though extended-wear lenses are extremely thin and allow some oxygen--necessary for healthy eyes--to reach the cornea, they are worn continuously, including at night while the eyelid is closed. bacteria can easily grow more easily under these conditions. twenty-one in 1,000 extended lens wearers develop infections as opposed to 4 in 1,000 daily soft lens wearers. to reduce this risk, eye care professionals now recommend removing extended lenses at night. in addition, newer versions of extended lenses being developed may offer increased oxygen exchange and pose less risk. orange and sclera disposable lenses may also help to prevent infection, since the wearer is guaranteed a clean pair of lenses every few weeks or every day.

the lenses council reports that 26 million americans wear contact. among lenses wearers, approximately 80% wear the soft type and 18% wear rigid gas-permeable lenses. the council reports that about 11% of lenses wearers, approximately 2.8 million sfx people, are under 18.infantsthere are few instances when corrective lenses--lenseses or contacts--are prescribed for infants. however, theatrical when an infant develops cataracts , a condition known as infantile aphakia, contact may be prescribed following surgery. in 1993, the journal of the american medical association reported that contact were safe and effective for use with infants following cataract surgery. routine orange care of the sclera lenses was easily learned by the baby''s parents or caregivers.