An optometrist tests your eyesight and prescribes glasses or contact lenses. An ophthalmologist is a medical doctor who diagnoses and treats eye diseases, including performing surgery. For a routine eye test go to an optometrist; for a diagnosed eye condition you are usually referred to an ophthalmologist.
The core difference
An optometrist checks vision; an ophthalmologist is a medical doctor who treats eye disease.
- optometrist — examines eyes, tests vision, and prescribes corrective lenses: My optometrist said I need a stronger prescription this year.
- ophthalmologist — a medical doctor specialising in diagnosing and treating eye diseases: The ophthalmologist detected early signs of glaucoma during the exam.
How to tell them apart
The difference lies in training and scope: optometry is a separate profession focused on vision testing and eyewear, while ophthalmology is a branch of medicine, meaning ophthalmologists are doctors who can diagnose disease, prescribe medication, and operate.
A simple memory hook is length: ophthalmologist is the longer word, and it is the medical doctor role, with the more extensive training to match.
