| OMT | object modeling technique; ocular microtremor; O-methyltransferase; ophthalmic medical technician or... |
|---|---|
| OND | Ophthalmic Nursing Diploma; orbitonasal dislocation; other neurological disorders |
| OPN | ophthalmic nurse; osteopontin |
| Phaco | lens phacoemulsification [ophthalmic cataract surgery] |
| CSSD | central sterile supply department |