The eye depends on the flow of tears to provide constant moisture and
lubrication to maintain vision and comfort. Tears are a combination of water,
for moisture; oils, for lubrication; mucus, for even spreading; and antibodies
and special proteins, for resistance to infection. These components are
secreted by special glands located around the eye. When there is an imbalance
in this tear system, a person may experience dry eyes.
When tears do not adequately lubricate the eye, a person may experience:
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When tears do not adequately lubricate the eye, a person may experience:
- Pain
- Light sensitivity
- A gritty sensation
- A feeling of a foreign body or sand in the eye
- Itching
- Redness
- Blurring of vision
What Causes Dry Eyes?
In addition to an imbalance in the tear-flow system of the eye, dry eyes can be caused by situations that dry out the tear film. This can be due to dry air from air conditioning, heat, or other environmental conditions. Other conditions that may cause dry eyes are:- The natural aging process, especially menopause.
- Side effects of certain drugs such as antihistamines and birth control pills.
- Diseases that affect the ability to make tears, such as Sjogren's syndrome, rheumatoid arthritis, and collagen vascular diseases.
- Structural problems with the eye lids that don't allow them to close properly.
How Are Dry Eyes Treated?
Though dry eyes cannot be cured, there are a number of steps that can be taken to treat them. You should discuss treatment options with an eye care specialist. Treatments for dry eyes may include:- Artificial tear drops and ointments. The use of artificial teardrops is the primary treatment for dry eye. Artificial teardrops are available over the counter.
- Temporary punctal occlusion. Plug that can be removed or will dissolve over a few days is inserted into the tear drain of the lower eyelid to determine whether permanent plugs can provide an adequate supply of tears.
- Permanent punctal occlusion. If temporary plugging of the tear drains works well, then longer-lasting plugs may be used. Many patients find that the plugs improve comfort and reduce the need for artificial tears.
- Restasis. Eye drop that helps your eyes increase their own tear production with continued use.
- Other medications. Other medications, including topical steroids, may also be beneficial in some cases.
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