A collection of videos relating to the diagnosis and treatment of eye movement disorders. This collection includes many demonstrations of examination techniques.
Dan Gold, D.O., Associate Professor of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, Emergency Medicine, and Medicine, The Johns Hopkins School of Medicine.
A collection of videos relating to the diagnosis and treatment of eye movement disorders.
NOVEL: https://novel.utah.edu/
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Figure 61: Vascular Distribution and Anatomy (Including 6th, 7th, 8th Nerves, MLF) of the Pons (Supplement) | Image | |
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Figure 61: Vascular Distribution and Anatomy (Including 6th, 7th, 8th Nerves, MLF) of the Pons (Supplement) | Image | |
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CANVAS (Cerebellar Ataxia, Neuropathy, and Vestibular Areflexia Syndrome) Video Head Impulse Test (vHIT) Figure | CANVAS (Cerebellar Ataxia, Neuropathy, and Vestibular Areflexia Syndrome) is a genetic condition consisting of slowly progressive late-onset ataxia, bilateral vestibulopathy, sensory neuropathy, chronic cough, and autonomic dysfunction. While the term vestibular areflexia typically implies bilateral... | Image |
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Figure 51: Lateral Medullary Lesion Causing Saccadic Dysmetria (Supplement) | Image | |
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Figure 51: Lateral Medullary Lesion Causing Saccadic Dysmetria (Supplement) | Image | |
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Figure 53: Vascular Distribution and Anatomy Relevant to the Lateral Medullary (Wallenberg) Syndrome (Supplement) | Image | |
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Figure 53: Vascular Distribution and Anatomy Relevant to the Lateral Medullary (Wallenberg) Syndrome (Supplement) | Image | |
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Figure 64: The Course of the 3rd (III) Nerve (Supplement) | Image | |
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Figure 65: Vascular Distribution and Anatomy (Including 3rd Nerve) of the Rostral Midbrain (Supplement) | Image | |
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Figure 65: Vascular Distribution and Anatomy (Including 3rd Nerve) of the Rostral Midbrain (Supplement) | Image | |
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Figure 68: The Course of the 4th (IV) Nerve (Supplement) | Image | |
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Figure 69: Vascular Distribution and Anatomy (Including 4th Nerve) of the Caudal Midbrain (Supplement) | Image | |
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Figure 69: Vascular Distribution and Anatomy (Including 4th Nerve) of the Caudal Midbrain (Supplement) | Image | |
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Figure 80: Vascular Distribution and Anatomy Relevant to the Medial Medullary Syndrome (Supplement) | Image | |
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Figure 80: Vascular Distribution and Anatomy Relevant to the Medial Medullary Syndrome (Supplement) | Image | |
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Ocular Motor & Vestibular Features of the MLF Syndrome (Figures 1, 2, and 3) | 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 abducting nystagmus was present OD, and there was a clear adduction lag when asking he... | Image |
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Pons: 6th, 7th, 8th, and Middle Cerebellar Peduncle Anatomy | From this cross-section of the pons, the proximity of the 7th and 8th fascicles can be appreciated, and a lateral inferior pontine syndrome (anterior inferior cerebellar artery territory), which could involve both of these fascicles, could cause acute prolonged vertigo accompanied by a + ipsilateral... | Image |
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Central Anatomy of the Third Nerve | Seen here is an axial section of the midbrain at the level of the superior colliculus. The paired nuclei are located ventral to the periaqueductal grey, and the midline central caudal nucleus (CCN) is located between the right and left nuclei. The CCN sends projections to bilateral levator palpebrae... | Image |
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Sagittal Section of the Midbrain Showing Structures Related to Normal Eyelid Function | 𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: During a vertical saccade, the rostral interstitial nucleus of the medial longitudinal fasciculus (riMLF) is activated, which excites the superior rectus (SR) and inferior oblique (IO) (IIIrd nerve) subnuclei. Additionall... | Image |
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Using Video Head Impulse Testing to Unmask Covert Saccades in Compensated Vestibular Neuritis (Figures 1 and 2) | This is a 30-year-old woman who experienced the acute vestibular syndrome (prolonged vertigo for >24 hours, nausea, unsteadiness, spontaneous nystagmus, head motion intolerance) and was diagnosed with vestibular neuritis. This diagnosis was based on a positive head impulse test to the left (see Figu... | Image |
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Brainstem Ocular Motor Machinery | Seen here is a sagittal view of the brainstem. The medulla has a significant role in gaze-holding, and the nucleus prepositus hypoglossi (NPH, along with the medial vestibular nucleus ) is the horizontal neural integrator. The abducens (6th) nucleus is located in the dorsal pons, and sends off the 6... | Image/MovingImage |
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Medullary Structures Relevant to Upbeat Nystagmus | This is an axial section of the medulla, slightly more caudal as compared to (please refer to figure "medullary structures relevant to the ocular motor and vestibular consequences of the lateral medullary (Wallenberg) syndrome). Again seen are the inferior cerebellar peduncle (ICP) and caudal aspect... | Image |
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Sagittal Section of the Brainstem Showing Structures Related to Normal Eyelid Function | Seen here is a sagittal view of the brainstem, with the structures relevant to normal eyelid function highlighted. The M-group, which can be found medial to the riMLF (coordinates eye and lid movements), has (weak) projections to the facial nucleus for frontalis muscle contraction, and (strong) proj... | Image |
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Central Anatomy of the Fourth Nerve | The IVth or trochlear nucleus is located ventral to the central periaqueductal grey matter, dorsal to the medial longitudinal fasciculus (MLF) and medial to the oculosympathetic tract at the level of the inferior colliculus. The fascicles of the IVth nerve travel dorsally and caudally around the cen... | Image |
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Eyelid Anatomy | Seen here are the major muscles of eyelid opening and closure. The levator palpebrae, which is innervated by the oculomotor nerve, inserts on the tarsus via the levator aponeurosis and directly on the skin of the upper eyelid. The superior tarsal muscle (also known as Muller's muscle, which is inner... | Image |