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TitleDescriptionSubject
1 Chronic Progressive External Ophthalmoplegia (CPEO) and Cerebellar SignsThis is a 60-yo-woman who initially presented with imbalance and ophthalmoparesis. Initially, there was mild horizontal gaze limitation with mild gaze-evoked nystagmus and slow saccades, and over the years, gait ataxia and dysarthria (mainly a scanning quality to her speech) developed, and her ophth...Abnormal Saccades; Abnormal Range; Horizontal Gaze Palsy; Gaze Evoked Nystagmus
2 Horizontal Gaze Palsy, Facial Nerve Palsy, and Nystagmus Due to Dorsal Pontine Ischemia𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: Presented here are two patients with horizontal gaze and facial palsies due to stroke. The first patient is a 60-year-old man who presented with double vision and hemiparesis due to a right dorsal pontine ischemic stroke....One-and-a-Half Syndome; Horizontal Gaze Palsy; Pons; Jerk Nystagmus; Upbeat Nystagmus; Gaze Evoked Nystagmus; Facial Nerve Palsy; Internuclear Ophthalmoplegia
3 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
4 Oculopalatal Tremor with Prominent Nystagmus, Bilateral Horizontal Gaze Palsy, and Bilateral Facial Palsies𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 50-year-old woman who experienced the acute onset of right sixth and seventh nerve palsies and left hemiparesis. Two cavernomas within the right pons (one in the region of the facial colliculus) were demonstrat...Abnormal Range; Sixth Nerve Palsy; Facial Nerve; Horizontal Gaze Palsy; OMS Pons; Pendular Nystagmus; Oculopalatal
5 Oculopalatal Tremor with Prominent Nystagmus, Bilateral Horizontal Gaze Palsy, and Bilateral Facial Palsies (Figure 1)Figure 1, MRI T2 sequence demonstrating hyperintensities involving bilateral inferior olives of the medulla. This is a 50-year-old woman who experienced the acute onset of right sixth and seventh nerve palsies and left hemiparesis. Two cavernomas within the right pons (one in the region of the facia...Abnormal Range; Sixth Nerve Palsy; Facial Nerve; Horizontal Gaze Palsy; OMS Pons; Pendular Nystagmus; Oculopalatal
6 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
7 PSP with Complete Ophthalmoplegia and Inability to Suppress the VOR𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 65-year-old woman presenting with visual complaints in the setting of advanced progressive supranuclear palsy (PSP). She had complete vertical and horizontal ophthalmoplegia, although the vestibulo-ocular reflex...Progressive Supranuclear Palsy (PSP); VOR Supression; Mesencephalon; Horizontal Gaze Palsy; Vertical Gaze Palsy
8 Pons: 6th and 7th Nerve Anatomy and the Central Segmental TractFrom this cross-section of the pons, the proximity of the 6th nucleus to the 7th nerve fascicles is apparent. This is the basis of the so-called facial colliculus syndrome, where an ipsilesional horizontal gaze palsy from a nuclear 6th lesion (usually related to stroke or demyelination) can be seen ...Sixth Nerve Palsy; Inter Nuclear Ophthalmoplegia; INO; One-and-a-Half; Horizontal Gaze Palsy; OMS Pons; Facial Nerve; Oculopalatal
9 Slow Saccades Due to Unilateral Paramedian Pontine Reticular Formation (PPRF) Injury with Preserved Movements Using the Vestibulo-Ocular Reflex𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This 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 osci...Abnormal Saccades; Pons OMS; Sixth Abducens Nerve; Abnormal VOR; Vestibulocochlear Nerve; Horizontal Gaze Palsy
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