Dr. Eiden is president and medical director of North Suburban Vision Consultants, Eye Care Specialties of Illinois and Keratoconus Specialists of Illinois, a multi-specialty group practice in the Chicago area. He is president and co-founder of the International Keratoconus Academy of Eye Care Professionals. Dr. Eiden is also co-founder and president of EyeVis Eye and Vision Research Institute, which is dedicated to clinical research and development of technologies in the eye care field. Dr. Eiden is an assistant clinical professor at the University of Illinois at Chicago Medical Center in the Department of Ophthalmology, Cornea and Contact Lens Service and an adjunct faculty member of the Indiana, Illinois, Midwestern, Salus, SUNY and UMSL Colleges of Optometry. He is Past Chair of the American Optometric Association’s Contact Lens and Cornea Section.