| NOTB | National Ophthalmic Treatment Board |
|---|---|
| OAP | Office of Adolescent Pregnancy; old age pension, old age pensioner; ophthalmic artery pressure; oste... |
| ODSG | ophthalmic Doppler sonogram |
| OMT | object modeling technique; ocular microtremor; O-methyltransferase; ophthalmic medical technician or... |
| OND | Ophthalmic Nursing Diploma; orbitonasal dislocation; other neurological disorders |