There are two nuclei for the oculomotor nerve
: the oculomotor nucleus; and the Edinger-Westphal nucleus.
In this case, MRI with contrast revealed the diffuse contrast enhancement in the cisternal segment of the left oculomotor nerve
. Contrast-enhanced studies also show that focal thickening takes place at the exit of the nerve in the interpeduncular cistern without enhancement of the cavernous sinus or adjacent dura.
After a comprehensive work up and based on the particular restricted extraocular movements, we initially diagnosed her as a case of oculomotor nerve
Lid ptosis is caused by either the involvement of the sympathetic fibers arising from the cavernous sinus, resulting in loss of tone of Mueller muscles, or the involvement of the somatic efferent fibers that course along the superior branch of the oculomotor nerve
, resulting in loss of tone of the levator palpebrae superioris muscle. The fixed dilated pupil which presents with dilatation, fixation, and loss of accommodation of the ipsilateral pupil arises due to disruption of the parasympathetic fibers coursing with the oculomotor nerve
, resulting in paralysis of the pupillary ciliary muscle.,
palsy as the presenting symptom of gummatous neurosyphilis and human immunodeficiency virus infection clinical response to treatment.
and muscle abnomialities in congenital fibrosis of the extraocular muscles.
The muscles are respectively governed by the oculomotor nerve
, sympathetic nervous system tracts and fibers that are located in the mesencephalon and the cervical spinal cord.
Sphenoid sinus mucocele presenting with oculomotor nerve
palsy and affecting the functions of trigeminal nerve: A case report.
Incomplete oculomotor nerve
paresis continued for one month.
Other complaints were decreased level of consciousness, decreased vision, vomiting, hearing loss, acromegalic features, numbness, proptosis, cerebrospinal fluid (CSF) rhinorrhoea, altered behaviour, ataxia, blindness, dysphagia, oculomotor nerve
palsy, diplopia, vertigo, monoplegia, post-auricular discharge and tinnitus.
Eye pain due to trigeminal nerve stimulation, eye movement disorder (double vision) caused by oculomotor nerve
disorders, visual deficit due to optic nerve disorders, and blepharoptosis due to sympathetic nervous system disorders are present.
The nucleus of the oculomotor nerve
is placed in the midline region of the midbrain.