Ophthalmologists are physicians and surgeons - physicians of medicine (MDs) or physicians of osteopathy (DOs). MDs and DOs complete four or more years of college premedical education, four years of medical school and one year of internship to get their doctorate degrees and become licensed physicians.
After they become licensed physicians, they continue on with an Ophthalmology residency which consists of three or more additional years of education and training.
The Ophthalmologist may then choose to specialize in a particular field of ophthalmology of which there are nine fields: Corneal and external disease, Cataract and refractive surgery, Glaucoma, Uveitis and ocular immunology, Vitreo-retinal diseases, Ophthalmic plastic surgery, Pediatric Ophthalmology, Neuro-ophthalmology and Ophthalmic pathology. This sub specialization requires further education and training, generally another one to three years.
Ophthalmologists provide complete medical and surgical eye care. These include:
definitions taken from www.webMD.com