

| The Three O's of Eye Care | |||
| Optician | Optometrist (Oklahoma)* | Ophthalmologist | |
| Specializes in filling lens prescriptions as well as assist patients with lens and frame fitting and selection | X | ||
| Has a one or two year degree or certification | X | ||
| A doctor of optometry (O.D.) education includes 4 years of post-graduate doctoral training at an optometry school | X | ||
| A medical doctor (M.D.) or doctor of osteopathic medicine (D.O.) education includes 4 years of medical school, and an additional 4-8 years of post-graduate residency and internship training in ophthalmology. | X | ||
| Performs vision correction exams, or "refractions" | X | X | |
| Fits and prescribes contact lenses and prescription lenses for eyeglasses | X | X | |
| Diagnose and treat conditions such as nearsightedness/myopia, farsightedness/hyperopia, astigmatism, and other eye-related conditions | X | X | |
| Prescribes certain medications for eye conditions | X | X | |
| Provides vision therapy services | X | X | |
| Can provide pre- and post-operative care following eye surgery | X | X | |
| Can perform surgeries related to the eye | X (limited*) | X | |
| Diagnose and treat complex medical eye conditions | X | ||
| Prescribes a broad range of medications for more complicated conditions | X | ||