(1) Davitt W, et al. Efficacy in Patients with Dry Eye after Treatment with a New Lubricant Eye Drop Formulation. Journal of Ocular Pharmacology and Therapeutics; Volume 26, Number 4, 2010. (Attachment A). This paper shows general improvements in signs and symptoms of dry eye in subjects that used Systane Ultra over a 42-day period. (2) Christensen MT, B lackie CA, Korb DR, et al. A n evaluation of the performance of a novel lubricant eye drop. Poster presented at: ARVO; May 2010; Fort Lauderdale, FL. (3) Gail Torkildsen1, Anna E. Martin2, Marion Tudor2, Joe Griffin2, George W. Ousler III1, Donna Welch1, Mark B. Abelson1,3. Evaluation of Functional Visual Performance Using the IVAD Method With Currently Marketed Artificial Tear Products. 1Ora, Inc Andover, MA; 2Alcon Research Ltd., Fort Worth, TX; 3Schepens Eye Research Institute, Harvard Medical School, Boston, MA. Clinical Ophthalmology, 2009. (4) Clark L. Springs.Novel Hydroxypropyl-Guar Gellable Lubricant Eye Drops For Treatment of Dry Eye. Adv Therapy (2010) 27(10):681-690.