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Dry Eyes (Keratitis Sicca)
The
tear film in the human eye is a very complex fluid. It is secreted
by various glands around the eye. The tear film has mechanical,
lubricating action and protects the eyes from harmful bacteria,
allergens and other infecting substances. All of us develop less
thick tears from age 40 on. This process is progressive and by the
time we reach our 70s and 80s, the tear film is rather watery and
not an effective barrier against scratching of the eyes or bacterial
invasion.
As this is a common problem, we feel that everyone should use
artificial tears if they have chronic wet, scratch, itchy or burning
irritated eyes. The first line of defense is using artificial tears
at bedtime and the first thing in the morning. When artificial tear
supplementation does not give sufficient relief, making better use
of the body's own tears in an effective treatment mode. This can be
accomplished by blocking the drain of tears off the eyes with
punctual plugs. After an evaluation is done with several tests to
establish the quantity and character of the tear film, plugs can be
placed in the puncta that drain tears off the eyes and retention of
a better tear film can be achieved. A trial of temporary plugs is
sometimes done before going forward with non-dissolvable ones.
In all dry eye patients, the use of artificial tears must become
part of their lifestyle. Certainly, for the patient with any mild to
moderate eye discomfort of a chronic nature, a trial for a short
time with over-the-counter artificial tears is warranted. If the
problem persists, please make arrangements with your eye care
professional for an evaluation.
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