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A cataract
is a clouding of the
lens of the eye and is most often age-related. Cataracts
are a major cause of vision loss in the United States,
and most people will eventually experience some cataract
formation after age 65. The good news is that cataracts
can be treated very successfully with surgery.
In a healthy eye with
good vision, light passes through the clear lens. The
lens helps to focus the image on the retina (nerve cells
at the back of the eye), and the retina relays the image
to the brain. Cataracts interfere with this normal visual
process. When a cataract forms on the lens of the eye,
it prevents light from passing through it correctly.
As a result, the image focused on the retina is cloudy,
blurry, or distorted.
Cataracts form as part
of the aging process as the lens of the eye undergoes
chemical changes and loses some of its pliability. Cataracts
can also be congenital. Eye injuries and some eye diseases
(such as glaucoma) can contribute to the development
of cataracts as well. Symptoms of cataracts include
cloudy or blurry vision, problems with glare and halos,
frequent glasses prescription changes, and double vision.
Cataracts
cannot be prevented but they can be treated.
Regular eye examinations can help diagnose cataracts.
Special instruments, such as the ophthalmoscope and
slit lamp, allow doctors to view the eye's internal
structures. Other vision tests can help determine how
much cataracts are affecting vision. Some of the tests
that may be used include: contrast sensitivity, glare
testing, an A-scan (an ultrasound test), a potential
acuity measurement (PAM), and an endothelial cell count.
Remember, cataracts can
be treated very effectively with surgery. Surgery is
not typically urgent but is done when the cataract causes
bothersome interference with vision. Please contact
us to learn more about cataracts or schedule an appointment.
Cataract
Surgery
Cataracts, cloudings
of the eyes' natural lenses, are a common ailment. Fortunately,
surgery to remove cataracts has an exceptionally high
success rate, and new techniques have improved the procedure
and reduced recovery time.
One significant
advancement has come about in anesthesia administration.
In the past, general anesthesia or local injections
were required. Today, eye drops can be used to numb
the eye without the use of a needle. Topical anesthesia
in the form of eye drops is safer and more comfortable
for the patient.
Another recent improvement
is the "no-stitch" technique, which involves
the use of a single tiny incision made in the eye's
cornea (its outer layer). The incision heals by itself
in a short time. This technique offers many advantages,
from reduced recovery time to lower risk of postoperative
astigmatism.
No-stitch surgery is made
possible by a surgical technique known as phacoemulsification,
which uses ultrasound technology to break apart the
cataract. In phacoemulsification, a tiny probe enters
the eye through a small corneal incision. The probe
then siphons out the pieces of the cloudy lens. Once
the cataract-containing lens is removed, it is replaced
with a special replacement lenses known as an intraocular
lens (IOL). Recovery time after surgery is short, and
most people experience vision improvement soon after
surgery. Some people will still need glasses after cataract
surgery, while others may be able to see clearly without
them.
Finally,
technology now allows for simple laser treatment
of so-called "secondary cataracts," which
can occur when the clear lens capsule left in place
during previous cataract surgery becomes cloudy itself.
While most people can
benefit from the latest techniques in cataract surgery,
we do offer traditional techniques as well. Even if
you are not a good candidate for the new surgical options,
you can expect good results from traditional cataract
surgery. Cataract surgery can help reverse vision loss
from cataracts, so please contact us today to schedule
an appointment.
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