<unk>  is a sinusoidal oscillation, which refers to the waveform of involuntary eye movements that may occur in any direction. It is characterized by the multidimensional slow eye movements of the eyes (1 Hz frequency) with an equal velocity in each direction that resembles the trajectory of a pendulum. These pattern of these movements may differ between the two eyes. Depending upon the pattern of movements,<unk>  has been divided into different subtypes such as congenital nystagmus, acquired<unk> , and amaurotic nystagmus.
Pendular nystagmus
Amaurotic nystagmus
Bruns nystagmus
Ocular tremor
Positional alcohol nystagmus
Ocular dysmetria
Conjugate gaze palsy
Physiological anisocoria