The Three O's:

Optometrist, Ophthalmologist, and Optician


  1. Optometrist: a doctor of Optometry (OD) is a primary vision care provider having completed four years of college and a four-year doctoral program. In addition to providing eye examinations, refractive surgery consultation/referral, contact lenses, and eyeglasses, optometrists in Ohio can test for and diagnose eye diseases such as glaucoma, diabetic retinopathy, cataracts and macular degeneration. They also treat certain eye diseases with prescriptions, including controlled substances. 
  1. Ophthalmologist: a doctor of Ophthalmology (MD) is a primary and secondary medical/surgical eye care provider having completed four years of college, four years of medical school, and at least two years of residency relating to the diagnosis and treatment, including surgery, of eye diseases.

  2. Optician: a person trained in the skills necessary to grind and shape materials to the optical powers as prescribed by an OD or MD. Education consists of trade school with certification. They cannot examine eyes.