Reported prevalences of systemic abnormalities in CRVO
| Hypertension | 38–61%70 74 135 136 |
|---|---|
| Diabetes mellitus | 13–15%70 136 |
| Arteriosclerosis | 21%54 |
| Abnormal glucose tolerance test | 17.5–34%93 135 |
| Hypercholesterolaemia or hypertriglyceridaemia | 32–57%93 135 136 |
| Increased plasma gammaglobulin levels | 28% (increased IgA levels in 17%)135 |
| Cryofibrinogenaemia | 12%135 |
| Increased plasma antiphospholipid antibodies | Occasional cases111 137 138 |