<unk>  is defined as the<unk>  associated with blindness or the central vision defects. It is characterized by the pendular or jerky movements of the eyes in the patients who have visual impairment for a long period of time.
Amaurotic nystagmus
Positional alcohol nystagmus
Bruns nystagmus
Pendular nystagmus
Persistent pupillary membrane
Argyll Robertson pupil
Physiological anisocoria
Scintillating scotoma