Casey Eye Institute works to provide eye care services through education, research and clinical leadership. It is a regional academic eye center that works to prevent blindness through advanced technology. The institute also educates medical students, residents, practicing ophthalmologists and health care providers. Casey Eye Institute is a part of Oregon Health and Science University, which undertakes various health and research activities related to patient care, education and community service. Oregon Health and Science University also offers educational services through its schools and grants, as well as doctoral degrees in medicine, dentistry and nursing. The university is comprised of more than 12,000 employees. Oregon Health and Science University maintains a presence in Portland, Ore.