Mean (SD) of optic nerve (ON) volumes and MTR in patients with LHON and healthy controls
| Controls | All patients | LHON | LHON-MS | |
| Mean ON volume (mm3) | 385.4 (18.1) | 312.7 (44.2) | 328.3 (34.5) | 273.7 (45.5) |
| Mean ON MTR (%) | 36.2 (2.2) | 30.5 (3.3) | 30.9 (2.7) | 29.7 (4.9) |
See text for further details and statistical analysis.