An optometrist is a doctor of optometry, licensed to examine eyes and to determine any visual problems. In addition, optometrists can diagnose and treat certain eye diseases.
Some optometrists can perform minor surgery, such as refractive surgery.
An ophthalmologist, is a medical doctor, or a doctor of osteopathy, who specializes in medical and surgical care for eyes. They diagnose eye problems, treat diseases of the eye, and perform surgery. Both Optometrists and Ophthalmologists can perform comprehensive eye examinations. Before choosing an eye doctor, it's a good idea to check the doctor's credentials and be sure they're board certified. If you have a specific eye problem, ask if the doctor specializes in that condition.