TheraTears EXTRA Dry Eye Therapy Lubricant Eye Drops provide EXTRAordinary relief. Discover one-of-a-kind silky hydration. TheraTears rehydrates dry eyes, protects against further irritation and supports a natural tear pH level. The unique formula contains the 5 vital electrolytes found in natural tears. As eyes become dry they lose water and become too salty, creating hyperosmolarity. TheraTears eye drops corrects the salt imbalance that can cause dry eye symptoms. Dr. Jeffrey P. Gilbard, Ophthalmologist created TheraTears eye drops after 18 years of research for dry eyes. To use, instill 1 or 2 drops in the affected eye(s) as needed. TheraTears eye drops are FSA- and HSA-eligible in the U.S. TheraTears provides dry eye therapy by restoring, cleansing and nourishing the eye.