An ophthalmologist is a medical or osteopathic doctor who specializes in eye and vision care. They can diagnose and treat all eye diseases, perform eye surgery, and prescribe and fit eyeglasses and contact lenses.[1] Optometrists are not medical doctors but can perform eye and vision tests, prescribe and dispense corrective lenses, detect eye abnormalities, and prescribe medications for certain eye diseases. Opticians are technicians trained to design, verify, and fit eyeglasses and contact lenses.