Get up to 12 Hours of Hydrating Comfort; TheraTears EXTRA Dry Eye Therapy Lubricant Eye Drops; Preservative Free; provide EXTRAordinary reliefDiscover TheraTears eye drops, one-of-a-kind silky hydration for dry eyesLubricating eye drops for extra dry eyes rehydrate, protect against further irritation and support a natural tear pH levelTheraTears Extra Dry Eye lubricating eye drops contain the 5 vital electrolytes found in natural tearsPreservative free for sensitive eyes; the single-use vials come in a foil pouch to ensure freshness TheraTears Extra Dry eye Therapy lubricant Eye Drops are extra moisturizing to rehydrate dry eyes, protect from further irritation and support the natural tear pH level. The unique formula is preservative free for sensitive eyes and severe dry eye sufferers. Dry eye can be caused by a salt imbalance in your tears. TheraTears with osmo-correction and a unique hypotonic and electrolyte balanced formula replicates healthy tears to restore your eyes natural balance for extraordinary relief of dry eye symptoms. TheraTears Dry Eye Therapy is available in a convenient, single-use vials sealed In foil pouches to ensure they are as fresh as natural tears. TheraTears is not only recommended by eye doctors, it was created by an ophthalmologist after 18 years of researched with sponsorship from the National Eye Institute. The formula is perfect for at home and on the go and is part of the TheraTears Dry Eye Therapy line for more complete dry eye symptom relief. TheraTears, more than just eye drops, dry eye Therapy.