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Oscillopsia

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https://www.readbyqxmd.com/read/29692756/hierarchical-cluster-analysis-of-semicircular-canal-and-otolith-deficits-in-bilateral-vestibulopathy
#1
Alexander A Tarnutzer, Christopher J Bockisch, Elena Buffone, Konrad P Weber
Background: Gait imbalance and oscillopsia are frequent complaints of bilateral vestibular loss (BLV). Video-head-impulse testing (vHIT) of all six semicircular canals (SCCs) has demonstrated varying involvement of the different canals. Sparing of anterior-canal function has been linked to aminoglycoside-related vestibulopathy and Menière's disease. We hypothesized that utricular and saccular impairment [assessed by vestibular-evoked myogenic potentials (VEMPs)] may be disease-specific also, possibly facilitating the differential diagnosis...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29687086/vertical-diplopia-and-oscillopsia-due-to-midbrain-keyhole-aqueduct-syndrome-associated-with-severe-cough
#2
Angela Jinsook Oh, Bryan Alexander Lanzman, Yaping Joyce Liao
Purpose: Midline structural defects in the neural axis can give rise to neuro-ophthalmic symptoms. We report a rare case of keyhole aqueduct syndrome presenting after two years of severe cough due to gastroesophageal reflux disease. Observations: A 58-year-old woman with a 2-year history of daily, severe cough presented to the neuro-ophthalmology clinic with progressive diplopia and oscillopsia. Examination revealed a 1-2 Hz down-beating nystagmus in primary gaze that worsened with left, right, and down gazes...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29599743/a-tool-to-quantify-the-functional-impact-of-oscillopsia
#3
Eric R Anson, Yoav Gimmon, Tim Kiemel, John J Jeka, John P Carey
Background: Individuals with bilateral vestibular hypofunction (BVH) often report symptoms of oscillopsia during walking. Existing assessments of oscillopsia are limited to descriptions of severity and symptom frequency, neither of which provides a description of functional limitations attributed to oscillopsia. A novel questionnaire, the Oscillopsia Functional Impact scale (OFI) was developed to describe the impact of oscillopsia on daily life activities. Questions on the OFI ask how often individuals are able to execute specific activities considered to depend on gaze stability in an effort to link functional mobility impairments to oscillopsia for individuals with vestibular loss...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29505103/interventions-for-eye-movement-disorders-due-to-acquired-brain-injury
#4
REVIEW
Fiona J Rowe, Kerry Hanna, Jennifer R Evans, Carmel P Noonan, Marta Garcia-Finana, Caroline S Dodridge, Claire Howard, Kathryn A Jarvis, Sonia L MacDiarmid, Tallat Maan, Lorraine North, Helen Rodgers
BACKGROUND: Acquired brain injury can cause eye movement disorders which may include: strabismus, gaze deficits and nystagmus, causing visual symptoms of double, blurred or 'juddery' vision and reading difficulties. A wide range of interventions exist that have potential to alleviate or ameliorate these symptoms. There is a need to evaluate the effectiveness of these interventions and the timing of their implementation. OBJECTIVES: We aimed to assess the effectiveness of any intervention and determine the effect of timing of intervention in the treatment of strabismus, gaze deficits and nystagmus due to acquired brain injury...
March 5, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29501085/vertical-nystagmus-associated-with-glutamic-acid-decarboxylase-antibodies-responding-to-cyclophosphamide
#5
José Fidel Baizabal-Carvallo, Marlene Alonso-Juarez
Several neurological disorders have been described in patients with autoimmunity associated with GAD antibodies. Among these disorders, nystagmus and oculomotor dysfunction are increasingly recognized, although they have been rarely reported isolated or as the main manifestation of anti-GAD autoimmunity. Moreover, therapeutic approaches for such patients are unclear. Here we present a 44-year-old man with disabling oscillopsia secondary to downbeat nystagmus, abnormal saccades, ocular pursuit and optokinetic nystagmus, as well as mild gait ataxia and cerebellar atrophy associated with high serum GAD antibodies with intrathecal secretion of such antibodies...
April 15, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29467809/intermittent-ocular-microflutter-in-a-patient-with-acute-onset-oscillopsia
#6
Alberto Galvez-Ruiz, Elena Riva-Amarante, Adolfo Jimenez-Huete, Jose Fernandez Lorente, Oriol Franch Ubia
Saccadic intrusions are small involuntary saccadic movements that disrupt visual fixation. Among saccadic intrusions without intersaccadic intervals, ocular flutter and opsoclonus are prominent. The saccade amplitude can occasionally be very small, which is referred to as ocular microflutter. The authors present a patient with acute-onset oscillopsia following a non-specific viral condition. An ocular microflutter was subsequently detected using video-oculography. After extensive investigation, a diagnosis of isolated idiopathic or post-viral ocular microflutter was made...
February 2018: Neuro-ophthalmology
https://www.readbyqxmd.com/read/29260093/cardinal-features-of-superior-oblique-myokymia-an-infrared-oculography-study
#7
Sumeer Thinda, Yi-Ren Chen, Yaping Joyce Liao
Purpose: Superior oblique myokymia (SOM) is a rare eye movement disorder characterized by unilateral oscillopsia and binocular diplopia. Our study aimed to better understand SOM using infrared oculography. Methods: We examined and recorded five patients with SOM. Results: Binocular infrared oculography showed that in primary gaze, all patients exhibited torsional oscillations, which worsened in infraduction and abduction and improved in supraduction and adduction...
September 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29210008/development-and-surgical-removal-of-an-epiretinal-membrane-in-infantile-nystagmus-syndrome-a-new-type-of-oscillopsia
#8
Louis F Dell'Osso, Suber S Huang
PURPOSE: To report and discuss a focal oscillopsia in a small area of the visual field produced by, and after the removal of, an epiretinal membrane (ERM) in an individual with infantile nystagmus syndrome (INS) since birth with no associated afferent visual deficits. STUDY DESIGN: A retrospective case report. METHODS: A chart review, including clinical and electrophysiological data. A 74 y/o man with INS and an epiretinal membrane was studied...
March 2018: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29092804/bilateral-vestibular-hypofunction-in-quantitative-head-impulse-test-clinical-characteristics-in-23-patients
#9
Hilla Levo, Heikki Aalto, Timo P Hirvonen
OBJECTIVE: To explore clinical features of patients with bilateral vestibular hypofunction (BVH) verified in motorized head impulse test (MHIT). MATERIALS AND METHODS: We examined clinical records of 23 adult patients (10 males and 13 females), whose gain of the vestibulo-ocular reflex in the MHIT was bilaterally lowered. Fifteen of 62 unilateral cochlear implant (CI) recipients routinely tested both pre- and postoperatively with the MHIT had BVH. Eight of 198 vestibular outpatients selected to the MHIT due to clinical causes had BVH...
December 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29081426/bilateral-vestibulopathy-diagnostic-criteria-consensus-document-of-the-classification-committee-of-the-b%C3%A3-r%C3%A3-ny-society
#10
Michael Strupp, Ji-Soo Kim, Toshihisa Murofushi, Dominik Straumann, Joanna C Jen, Sally M Rosengren, Charles C Della Santina, Herman Kingma
This paper describes the diagnostic criteria for bilateral vestibulopathy (BVP) by the Classification Committee of the Bárány Society. The diagnosis of BVP is based on the patient history, bedside examination and laboratory evaluation. Bilateral vestibulopathy is a chronic vestibular syndrome which is characterized by unsteadiness when walking or standing, which worsen in darkness and/or on uneven ground, or during head motion. Additionally, patients may describe head or body movement-induced blurred vision or oscillopsia...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/28991103/clinical-and-oculographic-analysis-of-inferior-oblique-myokymia
#11
Ji-Yeong Jang, Hyeshin Jeon, Seo-Young Choi, Jae-Hwan Choi, Kwang-Dong Choi
A 63-year-old man experienced transient vertical oscillopsia lasting several seconds for 2 months. Examination disclosed paroxysmal excyclotorsion of the right eye, spontaneously or triggered by adduction. Eye movements using 3D video-oculography showed intermittent, monocular phasic movements which consisted of excyclotorsion of the right eye mixed with a small amount of supraduction and abduction, and a tonic movement with excyclotorsion and slight elevation. Orbital and brain MRI was unremarkable. Administration of oxcarbazepine markedly decreased the severity and frequency of the episodes...
December 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28980607/-metavestibular-disorders-and-disorders-of-higher-vestibular-function
#12
M V Zamergrad, O S Levin
Vertigo, instability, oscillopsia and concomitant autonomic disorders are classical and well-known symptoms of vestibular disorders. At the same time, recent studies suggest that there are more complicated vestibular dysfunctions caused by the cortical projections of the vestibular system. The central vestibular system includes parietal temporal cortex and insular, anterior intraparietal sulcus, posterior parietal and medial parts of the superior temporal gyrus, singular gyrus retrosplenial cortex, hippocampus and parahippocampal area...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28879396/vestibulo-ocular-reflex-deficits-with-medial-longitudinal-fasciculus-lesions
#13
Swee T Aw, Luke Chen, Michael J Todd, Michael H Barnett, G Michael Halmagyi
The medial longitudinal fasciculus (MLF) is the final common pathway for all conjugate adducting horizontal eye movements, as well as for the vertical-torsional vestibulo-ocular reflex (VOR). MLF lesion causes adduction paresis of ipsilesional (adducting) eye with dissociated nystagmus of contralesional (abducting) eye-the well-known clinical syndrome of internuclear ophthalmoplegia (INO). We measured the VOR stimulation and also any catch-up saccades, from individual semicircular canal (SCC) evoked by the head impulse test (HIT), using head and binocular 3-dimensional scleral search coils in 27 multiple sclerosis (MS) patients, 8 with unilateral, 19 with bilateral INO...
October 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28868046/a-novel-saccadic-strategy-revealed-by-suppression-head-impulse-testing-of-patients-with-bilateral-vestibular-loss
#14
Catherine de Waele, Qiwen Shen, Christophe Magnani, Ian S Curthoys
OBJECTIVE: We examined the eye movement response patterns of a group of patients with bilateral vestibular loss (BVL) during suppression head impulse testing. Some showed a new saccadic strategy that may have potential for explaining how patients use saccades to recover from vestibular loss. METHODS: Eight patients with severe BVL [vestibulo-ocular reflex (VOR) gains less than 0.35 and absent otolithic function] were tested. All patients were given the Dizziness Handicap Inventory and questioned about oscillopsia during abrupt head movements...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28814456/downregulation-of-early-visual-cortex-excitability-mediates-oscillopsia-suppression
#15
Hena Ahmad, R Edward Roberts, Mitesh Patel, Rhannon Lobo, Barry Seemungal, Qadeer Arshad, Adolfo Bronstein
OBJECTIVE: To identify in an observational study the neurophysiologic mechanisms that mediate adaptation to oscillopsia in patients with bilateral vestibular failure (BVF). METHODS: We directly probe the hypothesis that adaptive changes that mediate oscillopsia suppression implicate the early visual-cortex (V1/V2). Accordingly, we investigated V1/V2 excitability using transcranial magnetic stimulation (TMS) in 12 avestibular patients and 12 healthy controls. Specifically, we assessed TMS-induced phosphene thresholds at baseline and cortical excitability changes while performing a visual motion adaptation paradigm during the following conditions: baseline measures (i...
September 12, 2017: Neurology
https://www.readbyqxmd.com/read/28806326/recurrent-vestibular-migraine-vertigo-attacks-associated-with-the-development-of-profound-bilateral-vestibulopathy-a-case-series
#16
Jacob L Wester, Akira Ishiyama, Gail Ishiyama
BACKGROUND: Bilateral vestibulopathy (BVP) is a debilitating condition characterized by gait ataxia, oscillopsia, and imbalance. OBJECTIVE: Case series of patients with migraine-linked vertigo spells and profound BVP. PATIENT 1:: A 69-year-old man presented with a history of recurrent severe vertigo spells lasting up to 3 days in duration associated with prostrating migraine headaches starting at age 60. His symptoms were misdiagnosed as an anxiety syndrome. At age 68, electronystagmography (ENG) revealed bilaterally absent caloric responses and complete BVP...
September 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28593438/eye-movements-are-correctly-timed-during-walking-despite-bilateral-vestibular-hypofunction
#17
Eric R Anson, Tim Kiemel, John P Carey, John J Jeka
Individuals with bilateral vestibular hypofunction (BVH) often report symptoms of oscillopsia (the perception that the world is bouncing or unstable) during walking. Efference copy/proprioception contributes to locomotion gaze stability in animals, sometimes inhibiting the vestibulo-ocular reflex (VOR). Gaze stability requires both adequate eye velocity and appropriate timing of eye movements. It is unknown whether eye velocity (VOR gain), timing (phase), or both are impaired for individuals with BVH during walking...
August 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28512444/longitudinal-quantification-of-eye-movement-impairments-after-pontine-hemorrhage
#18
Melis Suner, Glen T Prusky, Jason B Carmel, N Jeremy Hill
INTRODUCTION: We report a case of hypertrophic olivary degeneration due to pontine hemorrhage. A 59-year-old male with untreated hypertension suffered a primary pontine hemorrhage, which caused horizontal eye-movement limitation. Progressive neurological deterioration with involuntary eye and palatal movements began months after hemorrhage. This was accompanied by magnetic resonance imaging evidence of hypertrophic olivary degeneration at 4.5 months. BACKGROUND: Primary pontine hemorrhage often leads to impairment of eye movements and diplopia...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28382131/superior-semicircular-canal-dehiscence-syndrome-diagnosis-and-surgical-management
#19
Marite Palma Diaz, Juan Carlos Cisneros Lesser, Alfredo Vega Alarcón
Introduction Superior semicircular canal dehiscence syndrome was described by Minor et al in 1998. It is a troublesome syndrome that results in vertigo and oscillopsia induced by loud sounds or changes in the pressure of the external auditory canal or middle ear. Patients may present with autophony, hyperacusis, pulsatile tinnitus and hearing loss. When symptoms are mild, they are usually managed conservatively, but surgical intervention may be needed for patients with debilitating symptoms. Objective The aim of this manuscript is to review the different surgical techniques used to repair the superior semicircular canal dehiscence...
April 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/28296174/vestibulotoxicity-with-systemic-gentamicin-in-different-dosing-regimens-our-experience-in-46-patients
#20
LETTER
M I Syed, J A Leis, O Ilan, W L Gold, D D Pothier, J A Rutka
No abstract text is available yet for this article.
October 2017: Clinical Otolaryngology
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