Cinical features of patients with multiple sclerosis (MS) at the study entry
| Patient No | Age | Sex | MS duration (y) | MS course | EDSS | Previous optic neuritis | Nystagmus type | |
| 1 | 31 | M | 5 | RR | 3.5 | Right eye | APN + RJN | RE>LE |
| 2 | 43 | F | 14 | CP | 6 | Bilateral | APN | RE>LE |
| 3 | 39 | F | 8 | RR | 4.5 | Right eye | APN + R/LJN | RE=LE |
| 4 | 47 | F | 8 | CP | 5 | None | APN + LJN | LE>RE |
| 5 | 55 | M | 21 | CP | 6.5 | Bilateral | APN + RJN | RE>LE |
RR=Relapsing-remitting; CP=chronic-progressive; APN=acquired pendular nystagmus; RJN=right jerk nystagmus; LJN=left jerk nystagmus; R/LJN=right and left jerk nystagmus; RE=right eye; LE=left eye.