An OCULIST (7 letters) is a medical doctor who specializes in the diagnosis and treatment of eye diseases. An OPHTHALMOLOGIST (15 letters) is a medical doctor who specializes in the diagnosis and treatment of eye diseases, as well as performing surgery on the eyes. An OPTICIAN (8 letters) is a professional who specializes in the fitting and dispensing of eyeglasses and contact lenses. An optometrist (11 letters) is a health care professional who specializes in the examination and treatment of vision problems and eye diseases. All four of these professionals are considered eye specialists.