Dry eye & ocular surface damage due to some conditions &/or diseases eg, post-op surgeries (cataract surgery, LASIK), prolonged use of preservative-containing eye drops eg, antiglaucoma drugs. Superficial keratitis, Sjögren's syndrome or primary dry eye syndrome (keratoconjunctivitis sicca). Temporary relief of dryness, burning & ocular fatigue induced eg, by dust smoke, dry heat, air conditioning, extended computer screen use or contact lens wear.