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It is estimated that approximately ten million Americans suffer from dry eyes. In fact, it is the number one reason people see their eye doctors. There are many reasons why someone can have dry eyes. Bottom line, it occurs when we don’t have enough tears, the composition of our tears is incorrect, or our tears are not lubricating our eyes correctly. Of the many causes, the most common one is aging. As we age, we can experience an oil deficiency in the body. Oil is a necessary component of tears and without it the water in our eyes can evaporate too fast. Hot, dry or windy climates, rooms that are air-conditioned and even cigarette smoke can dry out the eyes as well. Individuals who wear contact lenses are also at a greater risk, as are people taking antihistamines, antidepressants, birth control pills and certain types of blood pressure medications. If you notice discomfort after periods of reading, watching TV, or working on the computer, you may be suffering from dry eyes too.