| CRA | central retinal artery; Chinese restaurant asthma; chronic rheumatoid arthritis; constant relative a... |
|---|---|
| CRAD | central retinal artery occlusion |
| CRAO | central retinal artery occlusion |
| CRB | chemical, radiological, and biological; congenital retinal blindness |
| CRD | carbohydrate-recognition domain; chronic renal disease; chronic respiratory disease; child restraint... |