The tear film that
covers the surface of the eye is made up of several components, secreted
by glands in the eyelids and around the eye. It's function is to keep
the surface wet, preventing damage and to inhibit the growth of bacteria.
Deficiency in any one of the components will lead to dry eyes. There
are many causes, the commonest being part of the aging process resulting
in poorer quality tears being produced.
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| Photograph of Cornea in a case of dry eye syndrome |
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Signs and Symptoms
- Gritty, scratchy or feeling of something in the eye
- Itching
- Burning
- Discomfort or pain
- Usually the eye is not red
Treatment
Consists of artificial
tear drops to use during the day and ointment to use last thing at night.
Different types of artificial tear drops can be bought over the counter
at a chemist without a prescription which are less expensive than a
prescription charge.
You will be told to use the drops quite often at first, then the frequency
may gradually be decreased. You may use the drops as frequently as you
like without risk of side-effects.
As the drops are used to relieve the symptoms and are not a cure for
the condition, you will probably need to use them for a long time. It
will also help to avoid situations which make your symptoms worse -
for example:
- Smokey environments
- Very warm central heating
- Air-conditioning
- Prolonged contact lens use
