Peter A. Simmons, Ph.D. is an Adjunct Professor in the School of Optometry & Vision Science, Faculty of Medicine & Health at UNSW Sdyeny,  Australia. He is also an independent research consultant within the field of Ocular Surface Disease. He recently retired from Allergan (a division of Abbvie), where he held the post of Executive Director of Clinical Development within the Research and Development organization, leading research groups to develop and test new dry eye treatments. Dr. Simmons was at Allergan from 2000 to 2017, and is an inventor of multiple patents, and the author of more than 40 research articles. Prior to Allergan, he was a Professor at the Southern California College of Optometry (Fullerton, California USA), and has also been a Visiting Professor at the Glasgow Caledonian University (Glasgow, Scotland, U.K.). Dr. Simmons received his Ph.D. in Physiology from Yale University (New Haven, Connecticut) in 1980, and completed post-doctoral training at Washington University (St. Louis, Missouri, USA).