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TitleDescriptionSubject
1 Horizontal Gaze Palsy, Facial Nerve Palsy, and Nystagmus Due to Dorsal Pontine IschemiaPresented 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. His exam was significant for a right horizontal gaze palsy due to right 6th nu...One and half syndome; Horizontal gaze palsy; Pons; Jerk nystagmus; Upbeat nystagmus; Gaze evoked nystagmus; Facial nerve palsy; Internuclear ophthalmoplegia
2 Oculopalatal tremor and one-and-a-half syndrome due to pontine hemorrhageThis is a 65-year-old man who was put on a blood thinner, and shortly thereafter experienced a midline pontine hemorrhage, which was more dense on the left side. Immediately afterwards, right hemiparesis and hemi-anesthesia, left lower motor neuron (LMN) facial palsy and ophthalmoparesis were noted....Pendular Nystagmus; Oculopalatal Tremor; INO; One and a Half; Pons OMS; Seventh Facial Nerve; Sixth Abducens Nerve
3 One-and-a-half syndrome due to pontine hemorrhageThis is a 50-year-old woman who, while exercising in the gym, suddenly experienced vertigo, nausea, vomiting, tingling in the left arm, and diplopia. MRI demonstrated a brainstem hemorrhage that involved the right greater than left pons. Examination demonstrated a right horizontal gaze palsy due to ...Abnormal Saccades, Sixth Nerve Palsy, INO, One and a Half Syndrome, Jerk Nystagmus, Gaze Evoked Nystagmus
4 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 nysagmus; Facial nerve palsy; Internuclear ophthalmoplegia
5 Pons: 6th and 7th nerve anatomy and the central tegmental 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, INO, One and a Half, Horizontal Gaze Palsy, OMS Pons, Facial Nerve, Oculopalatal
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