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    Research Scientist
  David L. Still is a research scientist at the Institute for Human and Machine Cognition. Dr. Still entered the U.S. Navy in 1975 on a health professions scholarship and began active duty as a clinical optometrist after graduating from the Illinois College of Optometry with a doctor of optometry degree in 1977. In 1984, while stationed at the U.S. Naval Hospital, Rota, Spain, he graduated from Troy State University with a masters of science in management and obtained a Private Pilot's license. In 1985 he was selected by the Navy for graduate research training in physiological optics. In 1989, he successfully defended his Ph.D. dissertation in vision sciences and physiological optics, Optical Limits to Contrast Sensitivity in Human Peripheral Vision, at Indiana University. In 1998, after 20 years of active Naval service Commander Still retired from the Navy as the Navy’s senior O.D./Ph.D., at his last duty station, the Naval Aerospace Medical Research Laboratory. His areas of research interest include night vision goggles, unaided night vision, flight instrument displays utilizing peripheral vision, aviation vision standards, contact lenses, visual acuity, peripheral vision, night myopia, and laser eye protection. Dr. Still has been awarded two patents.