Advanced vision research.Becomes Preservative Free on Eye Contact Provides Dry-Eye Relief that Works Patented Electrolyte Balance Sterile Lubricant eye drops Soothing Dry-Eye Relief that Works 18 Years of Clinical Research by an Eye Physician Yield a Medical Breakthrough."I had seen hundreds of patients frustrated by dry eyes and I wanted to help them. That's why I developed and patented TheraTears. I worked on this for 18 years and didn't give up. Try TheraTears and see what we've accomplished. ".Jeffrey P. Gilbard, MD.A portion of the purchase price of TheraTears funds critical research at the Schepens Eye Research Institute dedicated to fighting blinding and painful eye conditions.Lubricant Eye DropsTheraTears in a bottle contains a patented preserving ingredient that turns into pure oxygen and water eye contact. Oxygen and water work with the TheraTears formula to provide soothing dry-eye relief that works.Soothing Dry-Eye Relief that Works Helpful Hints: TheraTears in a bottle becomes preservative free on eye contact, and is designed for eyes with mild to moderate dryness or eyes that need occasional or maintenance treatment. Now you can have the benefits of a preservative-free solution, and use only the drops you need. Suggested Use: Install 1 or 2 drops in the affected eye(s) as needed. UPC: 358790001159 Weight: 0.31 lbs