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Cataract
FAQ
Who
is at risk?
Older
people are generally more at risk of developing cataracts than
younger people. Approximately 60% of people ages 60 and older
have their vision significantly affected by cataract formation.
For people over age 55, cataracts are the leading cause of vision
loss. In addition, cataracts can result from a variety of other
causes, including injury,
heredity, and disease.
How
is a cataract diagnosed?
Cataracts
are usually detected during an examination by a qualified ophthalmologist.
Regular appointments are important for early detection of cataracts.
Some of the standard eye tests that may be used to diagnose
cataracts include:
· Visual acuity test - A chart is used to evaluate
how well the patient sees at multiple distances.
· Pupil dilation - Eye drops widen the pupil so
that the lens and retina can be better examined.
· Tonometry - Fluid pressure in the eye is gauged
in this exam, which also helps detect glaucoma.
How
effective is cataract surgery?
According
to the American Society of Cataract and Refractive Surgery (ASCRS),
98% of cataract surgeries
are considered successful. Risk is lower in patients who undergo
extracapsular or phacoemulsification surgery, both of which
leave the eye's capsule
intact. Most patients report improved vision and few complications.
What
happens after surgery?
Recovery
time after cataract surgery is usually about six weeks, but
most discomfort should subside after a day or two. Immediately
following surgery, the patient may experience some pain and
irritation of the eye. Many patients also experience increased
light sensitivity and a small amount of fluid discharge. Special
pills and eye drops may be prescribed to promote healing and
regulate the pressure inside the eye. Pain relievers may also
be taken during the first few days if necessary. Follow-up exams
allow the physician to monitor patient progress. Sunglasses
or eye shields can help protect the eye while it is healing.
What
is the chance of having normal vision again?
Most
people will still require glasses or contacts after cataract
surgery, despite the improvement in vision that the procedure
offers. After surgery, there will be a period of recovery time,
while the eyes adjust to seeing without the cataract. If only
one eye is treated, the eyes must learn to work together again.
Many everyday activities can be resumed soon after surgery,
although patients may experience blurry vision for a time. Driving
may be impractical and unsafe for at first; the physician can
advise the patient on the appropriate time to begin driving
again. Also, patients who receive intraocular lenses (IOLs)
may notice some color distortion at first. This should resolve
itself within a few months, as the eyes adjust to the new, clear
lenses of the IOLs.
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