Table 1 Frequency of congenital and/or acquired ocular oscillations in a total of 4854 consecutive patients seen between 1995 and 2006 in our neurological dizziness unit
Type of nystagmus/ocular oscillationn
Downbeat nystagmus101
Upbeat nystagmus54
Central positional nystagmus26
Pendular nystagmus15
Congenital nystagmus12
Torsional nystagmus12
See-saw nystagmus8
Ocular flutter8
Square wave jerks7
Opsoclonus1
Periodic alternating nystagmus1

  • Downbeat nystagmus was the most frequent fixation nystagmus.