Protection, hydration & lubrication of the eye for treatment of moderate to severe dry eye syndrome. For discomfort, stinging, irritation of the eye. Symptoms caused by outside factors eg, wind, smoke, pollution, dust, sunny or cold conditions, dry heat, air conditioning, plane journeys, long hours working in front of computer screen. Preservative-free which helps provide good levels of tolerance on the eye. Can be used by contact lens wearers who wear any type of contact lens & provides immediate comfort that lasts all day long.