Dry eye occurs commonly and may be a chronic problem, particularly in older adults. When one blinks, tears spread across the front surface of the eye. Tears reduce the risk of eye infection by providing lubrication and washing away foreign matter in the eye. Tears also keep the surface of the eyes smooth and clear and maintain the health of the front surface of the eye. Dry eyes can occur if the eye does not produce enough quality tears to lubricate and nourish the eye.