Some people do not produce enough
tears to keep the eye comfortable. This is known as
dry eye.
Tears are produced by two
different methods. One method produces tears at a
slow, steady rate and is responsible for normal eye
lubrication. The other method produces large
quantities of tears in response to eye irritation or
emotions.
Tears that lubricate are
constantly produced by a healthy eye. Excessive tears
occur when the eye is irritated by a foreign body or when a
person cries.
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What
Are the Symptoms of Dry Eye |
The usual symptoms include:
Stinging or Burning Eyes
-
Scratchiness
-
Stringy Mucus In Or Around
the Eyes
-
Eye Irritation From Smoke or
Wind
-
Excess Tearing
-
Difficulty Wearing Contact
Lenses
Excess tearing from "dry
eye" sounds illogical, but if the tears responsible for
maintenance lubrication do not keep the eye wet enough, the
eye becomes irritated. When the eye is irritated, the
lacrimal gland produces a large volume of tears which
overwhelms the tear drainage system. These excess
tears then overflow from your eye.
Tear production normally
decreases as we age. Although dre eye can occur in
both men and women at any age, women are most often
affected. This is especially true after menopause.
Dry eye can also be associated
with arthritis and accompanied by a dry mouth. People
with dry eyes, dry mouth and srthritis are said to have
Sjogren's syndrome.
A wide variety of common
medications, prescription and over-the-counter can cause dry
eye by reducing tear secretion. Be sure to tell your
ophthalmologist the names of all the medications you are
taking, especially if you are using:
Diuretics
-
Betablockers
-
Antihistamines
-
Sleeping Pills
-
Medications for
"Nerves"
-
Pain Relievers
Since these medications are often
necessary, the dry eye condition may have to be tolerated or
treated with "artificial tears".