Dry eye produces discomfort and reduces vision when the tear film becomes chronically table or unavailable thereby leading to dryness of the conjunctiva and cornea. Sometimes, a person with a dry eye will have excess tears running down the cheeks, which may seem confusing. People who have Chronic Dry Eyes are diagnosed by a doctor and usually have a decrease in the amount of tear production. Many people also find their eyes become irritated when reading or working on a computer. Stopping periodically to rest and blink keeps the eyes more comfortable In addition, because these emergency tears tend to arrive too late, the eye needs to regenerate and treatment is necessary.
Dry eyes are caused by a lack of tears. A sad movie or a wedding can make your tears flow. But tears aren't produced only on those occasions. It is usually caused by a problem with the quality of the tear film that lubricates the eyes. Tears are a combination of water, for moisture; oils, for lubrication; mucus, for even spreading; and antibodies and special proteins, for resistance to infection. People with dry eyes often feel discomfort in a variety of forms. Sometimes even if the eyes are dry they may feel as though they 'water'; this is due to poorly spreading tears. When your eyes become irritated by dust or are bothered by wind, smoke or fumes, extra tears form to help wash away the foreign material. In response, the eye is flooded with tears to try to compensate for the underlying dryness. However, these tears are mostly water and do not have the lubricating qualities or the rich composition of normal tears. The eye depends on the flow of tears to provide constant moisture and lubrication to maintain vision and comfort. Dry eye syndrome is a chronic lack of sufficient lubrication and moisture in the eye.
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