http://en.wikipedia.org/wiki/Human_eye
Several suspected causal factors in our environment have been studied so far.One hypothesis is that indoor air pollution may cause eye and airway irritation.Eye irritation depends somewhat on destabilization of the outer-eye tear film, in which the formation of dry spots result in such ocular discomfort as dryness.Occupational factors are also likely to influence the perception of eye irritation.
Several suspected causal factors in our environment have been studied so far.One hypothesis is that indoor air pollution may cause eye and airway irritation.Eye irritation depends somewhat on destabilization of the outer-eye tear film, in which the formation of dry spots result in such ocular discomfort as dryness.Occupational factors are also likely to influence the perception of eye irritation.
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