The natural tears that your eyes produce are composed of three layers:
Dry eye is the term used to describe eyes that do not produce enough tears or tears with the proper chemical composition in any of these layers.
Dry eye is most often a result of eyes' natural aging process. Most peoples' eyes tend to become drier as they age, but the degree of dryness varies and some people have more problems than others. In addition to age, dry eye can result from:
Dry eye symptoms are often different in different people, but the following are commonly experienced by those whose tear production is inadequate:
If untreated, dry eye can be more than just irritating or uncomfortable.
Excessive dry eye can damage eye tissue and possibly scar the cornea, the transparent front covering of the eye, impairing vision. contact lens wear may be more difficult due to the possibility of increased irritation and a greater chance of eye infection.
If you are experiencing the symptoms of dry eye, your optometrist can perform "dry eye" tests using diagnostic instruments to give a highly magnified view and special dyes to evaluate the quality, amount and distribution of tears. Your optometrist will also need to know about your every day activities, your general health, medications you are taking and about environmental factors that may be causing your symptoms.
Unfortunately, dry eye cannot be cured, but your eye's sensitivity can be lessened and treatment prescribed so that your eyes remain healthy and your vision is not affected. Possible treatments include:
Other forms of medication:
Whatever treatment is prescribed for you, it is very important that you follow your doctor of optometry's instructions carefully. Dry eye does not go away, but by working together, you and your doctor can keep your eyes health and protect your good vision.