extended lenses lenses in particular pose a much greater risk sfx than daily wear lenses. though theatrical extended-wear lenses are orange extremely thin and allow some oxygen--necessary for healthy eyes--to reach the cornea, they are worn continuously, sclera including at night while the eyelid is closed. bacteria can easily grow more easily under these contact conditions. twenty-one in 1,000 extended lens wearers develop infections as opposed to 4 in 1,000 daily soft lens wearers. to reduce lenses this risk, eye care professionals now recommend removing extended lenses at night. in addition, newer versions of extended sfx lenses being developed theatrical may offer increased oxygen exchange and pose less risk. 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 lenses in particular pose a much greater risk sfx than daily wear lenses. though theatrical extended-wear lenses are orange extremely thin and allow some oxygen--necessary for healthy eyes--to reach the cornea, they are worn continuously, sclera including at night while the eyelid is closed. bacteria can easily grow more easily under these contact conditions. twenty-one in 1,000 extended lens wearers develop infections as opposed to 4 in 1,000 daily soft lens wearers. to reduce lenses this risk, eye care professionals now recommend removing extended lenses at night. in addition, newer versions of extended sfx lenses being developed theatrical may offer increased oxygen exchange and pose less risk. 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 distance orange between the lenses is for a "standard" person. generally, this will not be a problem, but if a patient is sensitive or has more closely set eyes, for sclera example, it may pose a problem. persons buying ready-made sunglasses or reading glasses should hold them up to see if they appear clear. they should also hold the lenses to see an object with straight lines reflected off of the lenses. if the lines don''t appear straight, the lenses may be warped or inferior.patients may sometimes need a few days to adjust to a new prescription; however, contact problems should be reported, because the glasses may need to be rechecked.contact