► Pendular
nystagmus 997KB ( This baby
suffers from oculocutaneous albinism. The video shows pendular nystagmus in the primary
position.)
► Periodic
alternating nystagmus 2,482KB ( The
patient has periodic alternating nystagmus. The video shows the presence of jerky nystagmus in the primary
position; the
fast component is initially to the left, followed by a short rest period of about 5
seconds, then
slowly the eyes develops jerky nystagmus with the fast component to the
right. The cycle is then
repeated with a rest period and then jerky nystagmus to the left. This type of nystagmus may be
congenital or secondary to cerebellar disease such as CVA or multiple
sclerosis.)
► See-saw
nystagmus 755KB (
This patient has see-saw nystagmus characterised by supraduction and intortion of one
eye, and infraduction and excyclotortion of the other.
This coniditon is seen in suprasellar lesion and bitemporal hemianopia is
common.)
► Upbeat
nystagmus 1,463KB (This patient has an upbeat
nystagmus in the primary position and a right skew devation (the right eye shows a vertical deviation as well as being
exotropic). This type of nystagmus is seen in patient with a brainstem lesion such as
multiple sclerosis. The exact location is uncertain.)
► Downbeat
nystagmus 782KB (The presence of
downbeat nystagmus suggests a lesion in the cervicomedullary
junction. Causes include Arnold-Chiari's syndrome,
spinocerebellar degeneration, stroke and multiple sclerosis.)
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