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TitleDescriptionSubject
76 Mesodiencephalic Stroke Causing Unilateral riMLF and INC Ocular Motor Syndromes𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 65-year-old man who experienced the sudden onset of diplopia (with horizontal and vertical components), dysarthria and imbalance. An MRI performed the following day showed a left mesodiencephalic stroke. The pat...Abnormal Saccades; Abnormal Alignment; Mesencephalon; Jerk Nystagmus; Torsional Nystagmus
77 Mild 6th Nerve Palsy Due to Pontine StrokeThis is a 70-year-old woman with HTN and diabetes who presented with horizontal diplopia for several weeks, worse in right gaze. There was a very subtle abduction paresis OD with full motility elsewhere. With cover-uncover testing, there was a small esotropia in right gaze (esodeviation seen with al...Abnormal Alignment; Abnormal Range; Sixth Nerve Palsy
78 Miller Fisher Syndrome - Ophthalmoplegia and Hyperreflexia𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 45-yo-woman who presented with mild imbalance and diplopia. There had been a preceding viral illness several weeks prior. Examination demonstrated horizontal gaze paresis (sparing unilateral adduction), mild gai...Range of Eye Movements/Motility Abnormal; Horizontal Gaze Palsy; Miller Fisher Syndrome
79 Miller Fisher Syndrome - Ophthalmoplegia, Ptosis and Ataxia𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a young man who presented with ptosis, difficulty moving the eyes and gait imbalance several weeks after a GI illness. Miller Fisher syndrome was diagnosed, IVIG therapy was initiated, and anti-Gq1b antibodies cam...Range of Eye Movements/Motility Abnormal; Miller Fisher Syndrome
80 Monocular Downbeat Nystagmus Due to a Posterior Fossa CystThis is a 40-yo-man who experienced months of imbalance and was found to have an epidermoid cyst (immediately posterior to the 4th ventricle), which was resected. Months after surgery, he experienced monocular vertical oscillopsia. On examination, there was subtle downbeat nystagmus (DBN) in the rig...Downbeat Nystagmus; Jerk Nystagmus; Gaze Evoked Nystagmus; Abnormal Saccades
81 Monocular Horizontal Pendular Nystagmus in MS𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: Both of these patients have MS and monocular (OS) horizontal pendular nystagmus. The first patient seen in the video has normal afferent function and no evidence of optic nerve disease in either eye, while the second pati...Pendular Nystagmus
82 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...Abnormal Saccades; Abnormal VORS; Cerebellar; Jerk Nystagmus; Upbeat Nystagmus; Gaze Evoked Nystagmus
83 Ocular Motor Signs in Brainstem Demyelinating Disease - Spontaneous Upbeat, Vertical Gaze-Evoked Nystagmus, Slow Saccades, Bilateral Vestibular Loss, INOs𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 25-year-old woman who presented with painful vision loss bilaterally two years prior to this video recording, which was diagnosed as optic neuritis. Months later, she experienced oscillopsia and binocular horizo...Abnormal Saccades; Abnormal VOR-HIT; Abnormal Range; INO; Upbeat Nystagmus; Abducting Nystagmus; Gaze-Evoked Nystagmus
84 Ocular Motor Signs in Progressive Supranuclear Palsy (PSP)𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 65-yo-woman complaining of imbalance and double vision. She had significant convergence insufficiency (and would close her right eye with near viewing), providing an explanation for her diplopia. Convergence ins...Abnormal Pursuit; Abnormal Range; Upgaze Palsy; Downgaze Palsy; Mesencephalon; Square Wave Jerks
85 Ocular Motor Signs in SCA 6𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 45-yo-man who was recently diagnosed with SCA 6. There was no clear spontaneous downbeat nystagmus (DBN) in primary gaze, although DBN could clearly be provoked by convergence. Other ocular motor features includ...Abnormal Convergence; Abnormal VORS; OMS Cerebellar; Downbeat Nystagmus; Jerk Nystagmus; Gaze Evoked Nystagmus; Rebound Nystagmus
86 Ocular Motor Signs of Cerebellar Ataxia - Gaze-Evoked Nystagmus, Saccadic Pursuit, and VOR Supression𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 30-year-old woman with a several year long history of imbalance due to cerebellar ataxia of unclear etiology. Seen in this video are common ocular motor signs in patients with advanced cerebellar dysfunction inc...Jerk Nystagus; Gaze-Evoked Nystagmus; Abnormal Pursuit; Abnormal VORS; Rebound Nystagmus
87 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...One-and-a-half Syndrome; Horizontal Gaze Palsy; Pons; Jerk Nystagmus; Upbeat Nystagmus; Facial Nerve Palsy; Internuclear Ophthalmoplegia
88 Opsoclonus Provoked by Convergence𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 40-yo-man with post-infectious opsoclonus-myoclonus syndrome. Opsoclonus was intermittently evident in primary position, but was consistently provoked (and intensified) by convergence. Occasionally, opsoclonus (...Abnormal Convergence; Opsoclonus
89 Organic Convergence Spasm and Nystagmus in Posterior Fossa LymphomaThis is a 20-year-old woman, who 9 months prior to this video, first experienced episodes of vertigo and vomiting occurring when lying down or rolling over in bed. Gastrointestinal work-up was unrevealing and MRI was performed which demonstrated "multifocal nodular enhancing lesions along the ependy...Spasm
90 Oscillopsia and Bilateral Vestibular Loss with Gentamicin OtotoxicityPatients with bilateral vestibular loss commonly experience oscillopsia with head movements, or an inability to stabilize retinal images with subsequent bouncing or jumping of the environment due to loss of vestibular function. This causes significant blurring of vision and disorientation, dizziness...Abnormal VOR; Abnormal HIT
91 Oscillopsia: A Common Symptom of Bilateral Vestibular Loss𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This video is an example of what a patient with bilateral vestibular loss experiences while walking. Without a VOR, there is no mechanism to ensure retinal stability of the world with each head movement, and oscillopsia (...VOR Abnormal; HIT Abnormal
92 Palato-ocular Synchrony in Oculopalatal TremorThis is a patient with OPT due to a pontine hemorrhage, and although she did have torsional pendular nystagmus, it was very subtle. However, with eyelid closure, much larger vertical ocular oscillations could be seen, which were in fact synchronous with her palatal tremor. This finding, sometimes ...
93 Paraflocculus (Tonsillar) Ocular Motor Syndrome and Dysmetria in a Chiari Malformation - Pre and Post-Operative Exams𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 25-year-old woman presenting with 6 months or progressive imbalance, binocular vertical diplopia, and occipital headaches, which were brought on or aggravated by coughing or sneezing. Examination demonstrated hy...Saccades; Skew Diviation; VOR Supression; Pursuit; Medulla
94 Parinaud's Syndrome in a Man with GBM of the Pineal Gland𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 60-yo-man who presented with diplopia, headaches, and difficulty looking up, and was found to have a mass involving the pineal gland. Biopsy was diagnostic of a GBM. Major features of Parinaud's (dorsal midbrain...Saccades; Convergence; Range; Dorsal Midbrain Syndrome; Convergence Retraction Nystagmus; Upgaze Palsy
95 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...Abnormal Saccades; Range of Eye Movements; Abnormal Range of Eye Movements; Smooth Pursuit; Normal VOR; Dorsal Midbrain Syndrome
96 Paroxysmal Ocular Tilt Reaction𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 60-year-old woman who 2 years prior experienced a left sided hypertensive hemorrhagic stroke, resulting in right hemiparesis, dysarthria and vertical diplopia. The initial vertical diplopia resolved completely a...Midbrain OMS; Skew Deviation; Jerk Nystagmus; Abnormal Alignment
97 Pendular Nystagmus𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is an example of pendular nystagmus, where like jerk nystagmus, the slow phase initiates the movement. However, unlike jerk nystagmus, there is no fast phase, but rather back to back slow phases resembling a pendulum...
98 Pendular Nystagmus and Ocular Motor Signs in MS𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 30-year-old man with a 15 year history of multiple sclerosis. For the last 12 months, he experienced horizontal oscillopsia. On examination, there were ocular motor abnormalities including gaze-evoked nystagmus,...Pendular Nystagmus; Jerk Nystagmus; Gaze Evoked Nystagmus; Abnormal Saccades
99 Pendular Nystagmus and Vision LossThree patients are presented here, each with poor vision (counting fingers or worse) related to retinitis pigmentosa in one patient (Usher's syndrome) and optic neuropathy in two patients, each of whom developed pendular nystagmus after vision loss developed. Visually mediated movements normally pre...Pendular Nystagmus
100 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...Jerk Nystagmus; Gaze-Evoked Nystagmus; Abnormal Headshake; Periodic Alternating Nystagmus
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