201 - 225 of 303
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201 Abnormal Visually-Enhanced VOR in Cerebellar Ataxia, Neuropathy, Vestibular Areflexia Syndrome (CANVAS)A 67 year old woman presented with 1 year of progressive numbness, gait instability, and oscillopsia when walking or with head movements. Examination showed excessive square-wave jerks, bilateral horizontal gaze-evoked nystagmus, impairment of the visually-enhanced vestibular ocular reflex (vVOR - s...Image/MovingImage
202 Nystagmus Due to Paraneoplastic (Anti-Yo) Brainstem and Cerebellar Degeneration𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 40-yo-woman with anti-Yo antibody associated with ovarian cancer. Initial symptoms 2.5 years prior (to this video) included imbalance and dysarthria. She complained of oscillopsia which was due to her upbeat nys...Image/MovingImage
203 Sequential Vasculopathic 3rd Nerve Palsies with Preserved 4th Nerve Function65-yo-man with uncontrolled diabetes who developed sequential vasculopathic 3rd nerve palsies. In attempted downgaze, there's clear incyclotorsion OU suggestive of preserved 4th nerve function on both sides. There was complete recovery over months. Video shows bilateral 3rd nerve palsies with intact...Image/MovingImage
204 The Acute Vestibular Syndrome with Dysarthria, Dysphagia, Dysphonia, Hemi-ataxia, and Saccadic Dysmetria Due to the Lateral Medullary (Wallenberg) Syndrome𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 50-year-old woman with the acute onset of vertigo, dysarthria, dysphagia and dysphonia/hoarseness (nucleus ambiguus), ptosis and imbalance. Her examination localized to a left lateral medullary (Wallenberg) synd...Image/MovingImage
205 Saccadic Hypermetria and Ipsipulsion (Behind Closed Eyelids and with Vertical Saccades)𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 40-year-old woman who experienced oscillopsia and vertical diplopia, due to spontaneous torsional nystagmus and a skew deviation (right hypotropia), respectively. The symptom onset was 7 months prior to these vi...Image/MovingImage
206 Divergence Insufficiency in Cerebellar AtaxiaThis is a 65-yo woman with complaints of imbalance (progressive over years) and horizontal diplopia at distance. On her exam, there was a small symptomatic esotropia at distance, but only a small esophoria at near. There were no obvious abduction deficits, and the 6 prism diopter ET at distance was...Image/MovingImage
207 Trigeminal, Facial (with Aberrant Regeneration), and Vestibulocochlear Nerve Palsies Following Tumor ResectionThis is a 30-yo-woman who underwent resection of a right trigeminal schwannoma. Post-operatively, she was vertiginous with a clearly + head impulse test to the right (and spontaneous left-beating nystagmus), had lost hearing in the right ear, had no facial sensation on the right, and had a right low...Image/MovingImage
208 Lateral Pontine Stroke Involving the Superior Vestibular Nucleus Causing Spontaneous Upbeat-torsional Nystagmus𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: A 65-year-old man presented to the emergency department with spontaneous vertigo and unsteadiness, and had was noted to have spontaneous upbeat nystagmus (UBN), also with a torsional component (top poles beating toward th...Image/MovingImage
209 Ocular Bobbing Due to Hepatic Encephalopathy𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 55-year-old man presented with hepatic encephalopathy, and found to have ocular bobbing. Head CT did not show any acute changes. Ocular bobbing almost always localizes to the pons, although cerebellar pathology ...Image/MovingImage
210 Voluntary Ocular Flutter𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 45-yo-man with intermittent complaints of horizontal oscillopsia for 1 year. On examination, all classes of eye movements were normal, and neurologic examination was normal. MRI of the brain had been performed p...Image/MovingImage
211 Dorsal Midbrain Syndrome from Stroke - Collier's Sign & PseudoabducensThis is a 70-yo-man who suffered a right midline thalamic/rostral midbrain hemorrhagic stroke causing a pretectal (Parinaud's) syndrome. There was prominent eyelid retraction (Collier's sign), a left pseudo-abducens, and upgaze palsy with convergence retraction nystagmus. There was no light-near dis...Image/MovingImage
212 Ocular Motor & Vestibular Features of the MLF Syndrome𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This 61-year-old woman with HTN and DM presented for evaluation of acute onset diagonal diplopia. Adduction OS was about 60% of normal while medialization OS improved with convergence. In right gaze, dissociated abducti...Image/MovingImage
213 Cavernous Sinus Mass Causing Right 3rd and 4th Nerve Palsies𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: 25-yo-man who complained of diplopia and was initially found to have right 4th and 6th nerve palsies in the setting of a right cavernous sinus mass (subsequently diagnosed as Ewing's sarcoma). When seen in follow-up (this...Image/MovingImage
214 Bilateral 6th Nerve Palsies Due to Idiopathic Intracranial HypertensionThis is a 25-year-old woman who presented with diplopia and blurry vision. On exam, she was found to have papilledema and bilateral 6th nerve palsies. Her opening pressure was >40 cm of water with a normal CSF analysis, and neuroimaging was unremarkable aside from subtle findings that have been asso...Image/MovingImage
215 Internuclear Ophthalmoplegia (INO) in Multiple Sclerosis𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This video includes 3 patients each with a known history of MS found to have unilateral or bilateral INOs on their exam. In the first 2 patients, the INOs are relatively subtle with normal adduction. However, with rapid h...Image/MovingImage
216 Bilateral INOs and Partial 3rd Nerve PalsiesThis is a 45-year-old man with progressive ptosis and ophthalmoparesis. 10 years prior to presentation, he experienced diplopia and had a hyperintense lesion involving the medial longitudinal fasciculus (MLF) per report. Over time, he developed bilateral adduction paresis, ptosis and upgaze paresis ...Image/MovingImage
217 Wall-eyed Bilateral INO in Caudal Midbrain LesionThis is a 30-yo-woman with the relatively acute onset of diplopia. There was a large angle exotropia, very subtle lag of the adducting saccades OD>OS, suggestive of bilateral INOs. This was best seen with rapid horizontal saccades, and a lesion involving bilateral MLFs in the caudal midbrain was dem...Image/MovingImage
218 Pseudo-INOs in Myasthenia GravisThis is a 55-yo-woman with an intermittent exotropia who had normal adduction OU, but clear lag of adducting saccades OD>OS with rapid horizontal saccades. This was much more apparent after repeat testing (ie, it was fatigable), and she wound up having ocular MG.Image/MovingImage
219 One-and-a-Half Syndrome, Facial Palsy, and Nystagmus Due to Dorsal Pontine DemyelinationThis is a 16-yo-girl with oscillopsia and double vision. Exam showed inability to look to the left with either eye due to left nuclear 6th. There was also a left INO (horizontal gaze palsy + INO = one-and-a-half syndrome) from left MLF involvement and left lower motor neuron facial palsy due to fasc...Image/MovingImage
220 Two Patients with Parinaud's Syndrome with Slow Upward Saccades and Normal Upward Range of MovementsPresented here are two patients with Parinaud's syndrome: Patient 1) suffered a hemorrhage of the dorsal midbrain causing slow upward saccades (with convergence retraction nystagmus, but normal vertical range of eye movements), and light-near dissociation, and Patient 2) had a germinoma of the dorsa...Image/MovingImage
221 Parinaud's Syndrome with Impaired Upward Saccades and Otherwise Normal Vertical Eye MovementsThis is a 50-yo-man who suffered a dorsal midbrain stroke. Exam demonstrated normal vertical range of eye movements, normal vertical VOR and smooth pursuit, but inability to perform upward saccades. Another feature of Parinaud's syndrome seen on his exam was light-near dissociation (not shown in thi...Image/MovingImage
222 Central Positional Vertigo and Nystagmus in a Posterior Fossa Tumor𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 30-year old woman who presented with positional vertigo and vomiting following a concussion related to a car accident 3 months prior. She was initially diagnosed with posterior canal (PC) benign paroxysmal posit...Image/MovingImage
223 Downbeat Nystagmus with Active Horizontal Head ShakingThis is a 70-year-old man who presented with one single complaint for 10 years - if he moved his head too quickly (even one single horizontal head movement to the right or the left), he would experience the abrupt loss of balance and dizziness. His typical episodes were reproducible, and interesting...Image/MovingImage
224 Downbeat (Perverted) Head Shaking Nystagmus in a Patient with Spontaneous Torsional Nystagmus𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 75-year-old woman with vascular risk factors who experienced abrupt onset imbalance and dizziness. Symptoms were maximal at onset, and she denied progression over 6 months. Clinically, it was felt that she had s...Image/MovingImage
225 Periodic Alternating Nystagmus and Central Head-Shaking Nystagmus from Nodulus Injury𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 35-year-old man who suffered a gunshot wound to his cerebellum. When he regained consciousness days later, he experienced oscillopsia due to periodic alternating nystagmus (PAN). He was started on baclofen 10 mg...Image/MovingImage
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