Humans produce two types of tears: lubricating tears and reflex tears. Lubricating tears are responsible for keeping our eyes moist, while reflex tears occur when we are exposed to stimuli such as smoke or dust, or experience injury or strong emotions. Dry Eye Syndrome (DES) occurs when your eyes can’t produce enough lubricating tears or produce reflex tears instead of lubricating tears. i-drop pur eye drops can help ensure your eyes are producing enough lubricating tears and provide relief from mild to moderate Dry Eye Syndrome. i-med i-drop pur eye drops can be used in conjunction with contact lenses.