Dry eye syndrome is characterized by general discomfort of the eyes (sandy – gritty irritation). This irritation will get worse as the day progresses. It will be accompanied by itchiness, redness, the feeling that there is a foreign object in the eye (even if there isn’t), discomfort after prolonged periods of eye strain (such as in computer use or sewing) and uncontrolled tearing ( this is a result of the lacrimal gland producing more tears in response to iritataion). Blurry vision, trouble with blinking and light sensitivity may also be present. Smoke will also abnormally upset the eyes.