An ophthalmologist is a medical doctor who has specializations in medical and surgical treatment of the eyes and prevention of eye disease. Ophthalmologists are qualified to diagnose and treat all conditions that affect a person’s eyes or their vision including performing complex and delicate surgery on your eye. They treat and prescribe medication to improve or prevent further complications from vision related conditions. They can also prescribe eyeglasses and contacts. The ophthalmologist must complete four years of medical school, a one-year internship and three years of residency training in ophthalmology. They are licensed by state regulatory boards and are required to fulfill continuing education requirements.