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TitleDescriptionSubject
1 Cerebellar degeneration with downbeat nystagmus provoked by convergenceDescription: This is a 70-yo-woman with a progressive gait disorder, diagnosed with cerebellar ataxia. She displayed typical cerebellar ocular motor signs including gaze-evoked nystagmus, choppy pursuit and VOR suppression, and there was very subtle spontaneous downbeat nystagmus, best appreciated w...Convergence Abnormal, Cerebellar pathology, Jerk nystagmus, Downbeat nystagmus
2 ConvergenceCan bring out or change the direction of vertical nystagmus in Wernicke's, or cerebellar disease; may be impaired in Parkinson's disease, head trauma, elderly patients; may overcome an adduction deficit with an INO. Instructional ocular motor examination procedures.Convergence; Exam; Abnormal Saccades
3 Convergence insufficiency and square wave jerks in PSPThis is a 70-yo-woman with progressive supranuclear palsy with complaints of difficulty reading. Her husband noticed that she would frequently close one eye when attempting to read, and words were not clear on the page, and this would in fact improve by covering one eye. On her exam, she had a 1 pri...Convergence, Alignment, Convergence Insufficiency, Square Wave Jerks
4 Downbeat nystagmus and convergence spasmThis is a 60-yo-woman with vertical oscillopsia related to her downbeat nystagmus, and diplopia related to an intermittent esotropia. When the esotropia was present, with versions there were bilateral abduction deficits. With ductions and the vestibulo-ocular reflex, it was apparent that the range o...Convergence-abnormal, Range-abnormal, Sixth nerve palsy, Convergence spasm, Cerebellar pathology, Jerk nystagmus, Downbeat nystagmus
5 Evaluation of ConvergenceThe assessment of convergence includes measuring alignment at near versus distance (see video, https://collections.lib.utah.edu/details?id=187677), near point of convergence and convergence amplitude. Near point of convergence is assessed by bringing a fixation target toward the bridge of the patie...Normal Convergence
6 Idiopathic downbeat nystagmus, decreasing with convergenceThis is a 25-yo-woman who experienced vertically oscillopsia for 1 year, and was found to have downbeat nystagmus. Interestingly, there were no other cerebellar ocular motor signs - e.g., normal saccades, smooth pursuit, VOR suppression, and no gaze-evoked nystagmus, although her (pure) downbeat was...Convergence-Abnormal, Cerebellar Pathology, Downbeat nystagmus, Jerk nystagmus
7 Ocular motor signs in SCA 6This 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 included choppy pursuit and VOR suppression horizontally and vertically, in addition ...Abnormal Convergence, Abnormal VORS, OMS Cerebellar, Downbeat Nystagmus, Jerk Nystagmus, Gaze Evoked Nystagmus, Rebound Nystagmus
8 Ocular motor signs in early progressive supranuclear palsyThis is a 64-year old man who experienced imbalance and falls (usually backwards) for the last 6 months. He experienced difficulty navigating stairs and had become a messy eater (thought to be in large part due to his vertical gaze palsy), and had developed hypophonia. Exam demonstrated square wave ...Abnormal Saccades, Abnormal Convergence, Abnormal Pursuit, Abnormal Range, Abnormal VORS, Vertical Gaze Palsy, Downgaze Palsy, OMS Mesencephalon
9 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
10 Opsoclonus provoked by convergenceThis 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 (back-to-back saccades in horizontal, vertical, torsional planes without an inte...Abnormal Convergence, Opsoclonus
11 Parinaud's syndrome in a man with GBM of the pineal glandThis 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) syndrome were present including: upgaze palsy, convergence retraction nystagm...Saccades; Convergence; Range; Dorsal midbrain syndrome; Convergence retraction nystagmus; Upgaze palsy
12 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...Upbeat Nystagmus; Downbeat Nystagmus; Jerk Nystagmus; Gaze-Evoked Nystagmus
13 Test your knowledge - Parinaud's syndrome in neurosarcoidosisWatch the first segment of the video up to "Stop! What would you expect with vertical gaze?" and select the best response below. The patient also has mild right-beating nystagmus which can be ignored for the purposes of this question. ; A.; The patient has pupillary findings consistent with bilatera...Normal Convergence, Vertical Gaze Palsy, Upgaze Palsy, Dorsal Midbrain, Mesencephalon, Convergence Retraction
14 Voluntary Ocular FlutterThis is a 45-yo-man with intermittent complaints of horizontal oscillopsia for 1 year. On examination, all classes of eye movements were normal, and neurologic examination was normal. MRI of the brain had been performed previously and was normal. During the exam while viewing any target close to his...Abnormal Convergence; Flutter; Voluntary Nystagmus; Voluntary ocular flutter
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