We provide vision education courses in the United States and overseas. Dr. Lewis has spoken to optometrists and ophthalmologists from 30 countries on five continents. Dr. Lewis is a frequent speaker both independently and as a principal speaker for the OPSIS course. Courses taught by Dr. Lewis include Visual examination and prescribing, Visual Neurorehabilitation, Vision Therapy, Myopia, Strabismus and Amblyopia, and Brain Injury. Optometrists from across the world frequently visit our office. Optometrists from North America, Europe, Asia, Africa, and Australia have visited with us to learn more about vision therapy and developmental optometry. Optometrists and ophthalmologists are welcome to visit with us and have the opportunity to work with our doctors, vision therapists, and patients.