Vision
Problems: Cataracts
While a comprehensive eye examination can determine for certain if you
have a cataract forming, there are a number of signs and symptoms that
may indicate a cataract. Among them are:
-
Gradual blurring or hazy vision where colors may seem yellowed;
- The
appearance of dark spots or shadows that seem to move when the eye
moves;
- A
tendency to become more nearsighted because of increasing density of
the lens;
- Double
vision in one eye only;
- A
gradual loss of color vision;
- A
stage where it is easier to see without glasses;
- The
feeling of having a film over the eyes; and
- An
increased sensitivity to glare, especially at night.
What is a
cataract?
A cataract is a clouding of the normally clear crystalline lens of the
eye. This prevents the lens from properly focusing light on the retina
at the back of the eye, resulting in a loss of vision. A cataract is
not a film that grows over the surface of the eye, as is often
commonly thought.
Why are they
called cataracts?
Sometimes cataracts can be seen as a milkiness on the normally black
pupil. In ancient times, it was believed this cloudiness was caused by
a waterfall - or cataract - behind the eye.
Who gets
cataracts?
Cataracts are most often found in persons over the age of 55, but they
are also occasionally found in younger people, including newborns.
What causes
cataracts?
It is known that a chemical change within the eye causes the lens to
become cloudy. The change may be due to advancing age or it may be the
result of heredity, an injury or a disease.
Excessive
exposure to ultraviolet or infrared radiation present in sunlight or
from furnaces, cigarette smoking and/or the use of certain medications
are also cataract risk factors. Cataracts usually develop in both
eyes, often at different rates.
Can
cataracts be prevented and treated?
Currently, there is no proven method to prevent cataracts from
forming.
If your
cataract develops to a point that daily activities are affected, you
will be referred to an eye surgeon who may recommend the surgical
removal of the cataract.
Prescription changes in your eyewear will help you see more clearly
until surgery is necessary, but surgery is the only proven means of
effectively treating cataracts. The surgery is relatively
uncomplicated and has a very high success rate
When will I
need to have cataracts removed?
Cataracts may develop slowly over many years or they may form rapidly
in a matter of months. Some cataracts never progress to the point that
they need to be removed. Usually, you will be ready to have the
cataract removed when it is having a significant adverse effect on
your lifestyle.
Our
office will arrange a consultation with a surgeon who will decide on
the appropriate time for removal. Most people wait until the cataracts
interfere with daily activities before having them removed.
What happens
after cataract surgery?
You, along with your doctors, will decide on the type of post-cataract
vision correction that you will use. Intraocular lens implants,
inserted in your eye at the time of surgery, serve as a "new lens" and
are the most frequent form of visual correction. In some cases,
however, eyeglasses or contact lenses may also be needed to provide
the most effective post-cataract vision.
Cataract
surgery has now developed to the point where most procedures are
completed in a day and overnight stays in hospital are unnecessary.
The results are usually excellent and patients are often able to
appreciate a significant improvement in vision almost immediately
following surgery.
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