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Paroxysmal tonic upgaze (PTU) of
childhood is a rare and
distinctive neuro-ophthalmological
syndrome characterized by
episodes of
sustained upward deviation...
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primary position, the
sclera can be seen
above the cornea, and
further upgaze increases the
distance between the
eyelids and irises.
Causes include upper...
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adults is needed.
Sodium valproate has been ****ociated with
paroxysmal tonic upgaze of childhood, also
known as Ouvrier–Billson syndrome, from
childhood or...
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anatomic lesions or
other causes of this syndrome.
Visually significant upgaze palsy can be
relieved with
bilateral inferior rectus recessions. Retraction...
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commonly affected muscle and
patient may
experience vertical diplopia on
upgaze and
limitation of
elevation of the eyes due to
fibrosis of the muscle. This...
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handwriting Rigid,
stiff muscles Cogwheeling (jerky
feeling in arm or leg)
Upgaze impairment Plastic, dead
feeling resistance known as "lead-pipe rigidity"...
- in Wiktionary, the free dictionary. PTU may
refer to:
Paroxysmal tonic upgaze,
ophthalmological disorder Phenylthiourea, an
organosulfur thiourea Power...
-
distance the
eyelid travels,
starting with the
downgaze movement to the
upgaze without moving the
frontalis muscle.
Although this
procedure can be completed...
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difficulty looking down (a
downgaze palsy)
followed by the
addition of an
upgaze palsy. This
vertical gaze
paresis will
correct when the
examiner p****ively...
- (33Â cm). The
patient can also be
tested in
alternate positions of gaze (
upgaze or downgaze). The test is
usually performed at near. The
number and type...
