You've searched: Format: "video/mp4" Collection: ehsl_novel_gold
126 - 150 of 192
Number of results to display per page
TitleDescriptionType
126 Range of Eye Movements and Evaluation for NystagmusRange: Assesses for motility deficit due to an ocular motor palsy, particularly if a posterior fossa localization is being considered; Nystagmus: Spontaneous nystagmus may or may not be noted and gaze-evoked nystagmus is common with posterior fossa lesions; nystagmus that is unidirectional in all di...Image/MovingImage
127 Rebound nystagmusThis is a 50-yo-man who presented for dizziness and imbalance. His exam demonstrated choppy smooth pursuit and VOR suppression as well as mild gait ataxia. There was mild right-beating nystagmus in right gaze and left-beating nystagmus in left gaze without vertical gaze-evoked nystagmus. Occasionall...Image/MovingImage
128 Reversal of vertical nystagmus with convergence in anti-DPPX encephalitisThis is a man who initially presented with spontaneous upbeat and torsional nystagmus, which led to the diagnosis of anti-DPPX encephalitis (for further details on this patient's course and for a video of his nystagmus, see reference 1). Over 6-12 months, his spontaneous (mainly) upbeat nystagmus (U...
129 SaccadesThe examiner should note: conjugacy (a lag of the adducting eye may be seen with an INO); accuracy (posterior fossa lesions commonly produce dysmetria (overshooting or undershooting); velocity (if slow, may suggest a lesion of the burst neurons in the pons [PPRF - horizontally] or midbrain [riMLF - ...Image/MovingImage
130 Saccadic dysmetria and ocular lateropulsion in lateral medullary strokeThis is a 30-yo-man who suffered a right lateral medullary stroke. Examination showed saccadic hypermetria to the right (ipsilesional), hypometria to the left (contralesional)and rightward ocular lateropulsion (ipsilesional), common ocular motor features of the lateral medullary syndrome. Saccadic h...Image/MovingImage
131 Saccadic hypermetria and ipsipulsion (behind closed eyelids and with vertical saccades)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 videos. MRI demonstrated ill-defined T2 and FLAIR hyperintensity signal changes i...
132 Saccadic intrusions with an intersaccadic intervalSeen here are patients with saccadic intrusions that have preserved intersaccadic intervals. Although square wave jerks (SWJ) are present in everyone to some degree at times, when prominent or when they interfere with vision, neurodegenerative conditions should be considered, mainly those involving ...Image/MovingImage
133 Saccadic smooth pursuit and vestibulo-ocular reflex suppression (VORS)This is a 20-yo-man who suffered a left MCA stroke years prior. Upon evaluation of his eye movements, saccades and all classes of eye movements were normal, although his smooth pursuit and VORS were choppy to the left (ipsilesional) and normal to the right. When pursuit and VORS (which are usually e...Image/MovingImage
134 Sagging eye syndrome and cerebellar disease in divergence insufficiencyThis is a 70-year-old woman who presented with diplopia at distance. Her exam demonstrated orthophoria at near with a fairly comitant 8-10 PD esotropia at distance without abduction paresis, consistent with divergence insufficiency (DI). With age, patients may develop an esodeviation greater at dist...
135 Sequelae of cerebellar hemorrhage - gaze-evoked nystagmus, alternating skew deviation and palatal tremorThis is a 75-yo-woman presenting with a gait disorder. Two years prior, she suffered a cerebellar hemorrhage. On examination, there were typical cerebellar ocular motor signs including gaze-evoked nystagmus, choppy smooth pursuit and VOR suppression, and saccadic dysmetria. There was also an alterna...Image/MovingImage
136 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
137 Skew deviation and spontaneous nystagmus due to posterior fossa lesionsThis is a 50-year-old woman who reported the abrupt onset of imbalance, right upper extremity incoordination and binocular vertical diplopia several months prior to her presentation to our clinic. On examination, she had a left hypertropia that was fairly comitant (measuring 5 prism diopters) assoc...
138 Slow abducting saccade in 6th nerve palsy40-yo-man with a right fascicular 6th nerve palsy due to stroke. There was improvement and only a minimal residual right abduction paresis OD by this visit, but still a relatively slow right abducting saccade seen in the video, especially apparent in the slow motion segment. Video shows slow abduct...Image/MovingImage
139 Slow saccades due to unilateral paramedian pontine reticular formation (PPRF) injury with preserved movements using the vestibulo-ocular reflexThis is a 60-year-old man who presented for imbalance and oscillopsia 10 months after surgery and 8 months after radiation for Merkel cell carcinoma of the neck. He developed imbalance after surgery and diplopia and oscillopsia 6 months prior to our evaluation. MRI showed enhancement of both 6th n...
140 Slow volitional saccades and poor fast phases to an optokinetic stimulus, with preserved head impulse testingThis is a 67-year-old woman presenting with imbalance and binocular horizontal diplopia at near. On examination there were frequent square wave jerks, limited supraduction OU and convergence insufficiency, which explained her diplopia. Pursuit and suppression of the vestibulo-ocular reflex were sa...
141 Smooth PursuitA pursuit deficit in one direction suggests an ipsilesional localization, but beware of a superimposed spontaneous nystagmus; a pursuit deficit in all directions is commonly seen with cerebellar lesionsImage/MovingImage
142 Spontaneous upbeat nystagmus in acute Wernicke's encephalopathyThis is a 40-year-old woman presenting with imbalance, confusion and oscillopsia. Exam demonstrated upbeat nystagmus (UBN) in primary gaze that remained UB in all directions of gaze, with a slight torsional component (top poles beating toward right ear) in certain directions of gaze. Her nystagmus f...
143 Square wave jerks and macrosaccadic oscillations in a patient with a cerebellar tumorThis is a 40-year-old man who developed severe headaches, confusion, and gait imbalance which led to neuroimaging which demonstrated a midline cerebellar mass with compression of the fourth ventricle and obstructive hydrocephalus. He underwent a suboccipital craniectomy for resection of the mass, an...
144 Subtle torsional pendular nystagmus in oculopalatal tremor (OPT)This is a 50-year-old woman who presented with imbalance, and MRI demonstrated a right cerebellar cavernous malformation. She underwent surgery to resect the malformation, and post-operatively experienced right hemiparesis and ataxia. Six months after the surgery, balance worsened and vision became ...
145 Superior Canal DehiscenceThis is a 60-yo-man who complained of autophony (eg, hearing his own heartbeat, noting that his own voice sounded too loud) and dizziness triggered with loud noises and straining at times. With pinched-nose Valsalva maneuver, there was downbeat-torsional (towards the right ear) nystagmus, suggestive...Image/MovingImage
146 Superior Oblique Myokymia (SOM)This is a patient with transient monocular oscillopsia OD and vertical diplopia noted to have many episodes of SOM in the office. There was not only myokymia OD, but also a 4 prism diopter left hypertropia during episodes (suggestive of mild depression OD from SO activation). Ocular motor and alignm...Image/MovingImage
147 Test Your Knowledge - Acute prolonged vertigoThis is a 60-year old man with diabetes presenting with acute onset prolonged vertigo that was ongoing at the time of this examination. Which of the following statements are true with regard to the localization and/or etiology of this patient's symptoms? ; A.; Whether or not symptoms worsen with he...
148 Test Your Knowledge - Central and peripheral vestibular and ocular motor signs due to a large vestibular schwannomaWhich of the following is least likely to be the correct localization or etiology given the findings seen in the video? ; 1); Acute right 8th cranial neuropathy ; 2); Right-sided vestibular schwannoma; 3); Right vestibular nucleus infarction ; 4); Right anterior inferior cerebellar artery distributi...
149 Test Your Knowledge - Monocular OscillopsiaWhich of the following associated signs is most likely to be seen in this patient presenting with oscillopsia? ; A.; Optic nerve pallor ; B.; Palatal tremor; C.; Severe unilateral cataract ; D.; Head bobbing; E.; Neurovascular contact on MR CISS/FIESTA imaging; ; A.; Correct. This patient has MS an...
150 Test Your Knowledge - Ocular tilt reaction and subjective visual verticalLesions of which of the following neuro-anatomic structures could result in the clinical findings shown? A. Right medulla B. Right interstitial nucleus of Cajal C. Right medial longitudinal fasciculus D. Left trochlear nerve E. Right caudal midbrain A. Correct. This patient presents with elements...
126 - 150 of 192