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How is a cataract treated?
       
When symptoms begin to appear, you may be able to improve your
vision for a while using new glasses, strong bifocals, magnification,
appropriate lighting or other visual aids.
Think about surgery when your cataracts have progressed enough to
seriously impair your vision and affect your daily life. Many people
consider poor vision an inevitable fact of aging, but cataract surgery
is a simple, relatively painless procedure to regain vision.
Cataract surgery is very successful in restoring vision. In fact, it is
the most frequently performed surgery in the United States, with over
1.5 million cataract surgeries done each year. Nine out of 10 people who
have cataract surgery regain very good vision, somewhere between 20/20
and 20/40.
During surgery, the surgeon will remove your clouded lens, and in most
cases replace it with a clear, plastic intraocular lens (IOL). New IOLs
are being developed all the time to make the surgery less complicated
for surgeons and the lenses more helpful to patients.
Most patients can resume daily activities almost immediately after
surgery; however, vision may be blurry. The eye needs time to heal and
adjust so that it can focus properly with the other eye. Follow-up
visits to the clinic are scheduled to evaluate progress
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What Causes a Cataract?
       
No one knows for sure why the eye's lens changes as we age,
forming cataracts. Researchers are gradually identifying factors that
may cause cataracts — and information that may help to prevent them.
Many studies suggest that exposure to ultraviolet light is associated
with cataract development, so eyecare practitioners recommend wearing UV
sunglasses and a wide-brimmed hat to lessen your exposure.
Other studies suggest people with diabetes are at risk for developing a
cataract. The same goes for users of steroids, diuretics and major
tranquilizers, but more studies are needed to distinguish the effect of
the disease from the consequences of the drugs themselves.
Some believe that a diet high in antioxidants, such as beta-carotene
(vitamin A), selenium and vitamins C and E, may forestall cataract
development. Meanwhile, eating a lot of salt may increase your risk.
Other risk factors may include cigarette smoke, air pollution and heavy
alcohol consumption. A small study published in 2002 found lead exposure
to be a risk factor; another study in December 2004, of 795 men age 60
and older, came to a similar conclusion. But larger studies are needed
to confirm whether lead can definitely put you at risk, and if so,
whether the risk is from a one-time dose at a particular time in life or
from chronic exposure over years.
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