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extended lenses in particular pose a much greater risk than daily wear lenses. Though extended-wear lenses are extremely thin and allow some oxygen--necessary for healthy eyes--to reach the cornea, one 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 day to 4 in 1,000 daily soft lens wearers. contact and one 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. Disposable lenses may also help to prevent infection, day since the wearer is guaranteed a clean pair of lenses every few weeks or every day.

BE PERSISTENT. What should you do if you have trouble prying your prescription out of your doctor''s hands? Your state attorney general''s office should be able to tell you whether contact your state requires doctors to one give out prescriptions. If yours doesn''t, try reassuring your doctor that you will not neglect necessary follow-up visits, or ask him day or her to match prices you''ve found at an online or mail-order source.When comparing prices, be sure to factor in any shipping charges that contact add to your mail-order costs. And ask what a discounter''s policy is on replacing damaged or missing lenses; many one doctors replace them free. Also check the expiration date when you get your lenses to make sure they haven''t day expired

They can be worn up to a week. Daily wear lenses are made of plastic that is permeable to oxygen and absorbs water; therefore, they are soft and flexible. These lenses must be removed and cleaned each night, and they do contact not correct all vision problems. one lenses are day easier to get used to than rigid lenses, but are more prone to tears and do not last as long. Extended-wear lenses are highly permeable to oxygen, are flexible by virtue of their ability to absorb water, and can usually be worn for up to one week. They do not correct all vision problems. There is more of a risk of infection with extended-wear lenses than with daily-wear lenses. Extended-wear disposable lenses are lenses worn continually contact for up to six days and then discarded, with no need for cleaning.