| 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... |
| CRP | chronic relapsing pancreatitis; corneal-retinal potential; coronary rehabilitation program; C-reacti... |
| CRV | central retinal vein |
| falciform retinal fold | A congenital fold from the disk to the ciliary region in the inferior temporal quadrant of the retina. (05 Mar 2000) |
|---|---|
| unequal retinal image | A condition in which the ocular image of an object as seen by one eye differs in size and shape from that seen by the other. (12 Dec 1998) |
| 11-cis-retinal | The isomer of retinaldehyde that can combine with opsin to form rhodopsin; it is formed from 11-trans-retinal by retinal isomerase. Synonym: neoretinal b. (05 Mar 2000) |