| ALS |
amyotrophic lateral sclerosis |
| AU |
both ears (Latin auris uterque) |
| AD |
right ear (Latin auris dextra) |
| AS |
left ear (Latin auris sinistra) |
| CNS |
central nervous system |
| CSF |
cerebrospinal fluid |
| CVA |
cerebrovascular accident; stroke |
| EEG |
electroencephalogram |
| EENT |
eye, ear, nose, and throat |
| ENT |
ear, nose, and throat |
| EMG |
electromyogram |
| HEENT |
head, eyes, ears, nose, and throat |
| ICP |
intracranial pressure (not Insane Clown Posse) |
| IOL |
intraocular lens |
| IOP |
intraocular pressure |
| LASIK |
laser-assisted in situ keratomileusis |
| LOC |
level of consciousness |
| LP |
lumbar puncture |
| MRA |
magnetic resonance angiography |
| MRI |
magnetic resonance imaging |
| MS |
multiple sclerosis |
| OU |
both eyes (Latin oculus uterque) |
| OD |
right eye (Latin oculus dexter) |
| OS |
left eye (Latin oculus sinistra) |
| PET |
positron emission tomography |
| PERRLA |
pupils are equal, round, reactive to light, and accommodate |
| PNS |
peripheral nervous system |
| TIA |
transient ischemic attack |