Mean plasma levels of homocyst(e)ine, folate, and vitamin B-12 in patients and controls
| NAION (n=59) | Controls (n=59) | Significance p value | |
| Homocyst(e)ine (μmol/1) | 11.8 ± 5.7 | 9.8 ± 2.5 | 0.020 |
| Plasma folate (ng/ml) | 4.3 ± 1.7 | 5.5 ± 1.9 | 0.001 |
| Vitamin B-12 (pg/ml) | 425.4 ± 207 | 458.5 ± 277 | 0.468 |
Results are given as mean (SD).