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https://www.readbyqxmd.com/read/29351692/homonymous-hemianopia-in-children-and-adolescents-an-mri-study
#1
Manja Haaga, Susanne Trauzettel-Klosinski, Anna Krumm, Stephan Küster, Iliya Ivanov, Angelika Cordey, Claudia Gehrlich, Martin Staudt
AIM:  Diagnosing homonymous hemianopia (HH) in children can be difficult due to inability to comply with perimetry. Therefore, HH can often only be suspected by magnetic resonance imaging (MRI) showing lesions to the retrochiasmatic visual pathways. The aim of our retrospective observational cross-sectional study was to improve the radiologic detection of HH. METHODS:  MRIs of 21 subjects (5-17 years old) with ophthalmologically confirmed HH (14 complete, 7 incomplete hemianopias) were analyzed...
January 19, 2018: Neuropediatrics
https://www.readbyqxmd.com/read/29344068/clinical-versus-evidence-based-rehabilitation-options-for-post-stroke-visual-impairment
#2
REVIEW
K L Hanna, F J Rowe
The aim of this study was to identify which treatments for post-stroke visual impairment have a supportive evidence base, and which are being used in practice without supportive evidence. A systematic review of the literature reporting on the available treatment options was compared against the visual treatments used in the Vision In Stroke (VIS) study. Treatments were identified for visual field, visual neglect, visual perception and ocular motility disorders. Visual scanning therapies for hemianopia and neglect have an established evidence base...
December 2017: Neuro-ophthalmology
https://www.readbyqxmd.com/read/29344062/cystic-optic-chiasm-lesion-atypical-magnetic-resonance-imaging-findings
#3
Sameen Haque, Kate Reid, Ross O'Neil, Christian Lueck
Intrinsic cystic lesions in the optic chiasm are an uncommon cause of bitemporal hemianopia compared with compressive lesions extrinsic to the chiasm. A 40-year-old man presented with difficulty driving. Clinical assessment revealed a bitemporal hemianopia. Magnetic resonance imaging showed an unusual cystic appearance of the chiasm. The appearance was felt to be most likely secondary to previous infective or inflammatory disease, but biopsy was not undertaken given the very significant risk of further visual loss...
August 2017: Neuro-ophthalmology
https://www.readbyqxmd.com/read/29339960/which-differences-in-priming-effect-between-neglect-and-hemianopia-a-case-description-of-a-bilateral-brain-lesioned-patient
#4
Matteo Sozzi, Stefania Bianchi Marzoli, Lisa Melzi, Massimo Corbo, Irene Venturella, Michela Balconi
It is widely known that visuospatial neglect and hemianopia maybe superimposed. We considered the differences in implicit information processing which is effective in patients with neglect but not with hemianopia. We then hypothesize that a prime-word in the neglected field should determine a semantic activation effect but not in a blind hemifield. Moreover eye movements could provide further details. In this work we considered a patient with a bilateral with the presence of either a left visual neglect and a right homonymous hemianopia...
October 2017: Neuro-ophthalmology
https://www.readbyqxmd.com/read/29332093/structure-function-correlation-in-hemianopic-vision-loss-in-children-aged-3-6-years-using-oct-and-svop-and-comparison-with-adult-eyes
#5
Wadim Bowl, Robert Knobloch, Silke Schweinfurth, Kerstin Holve, Knut Stieger, Birgit Lorenz
PURPOSE: To correlate visual field assessment with saccadic vector optokinetic perimetry (SVOP) in children with ganglion cell loss due to anterior pathway pathologies resulting in hemianopic visual field defects measured with optical coherence tomography (OCT). METHODS: 5 young (aged 3-6 years) and 5 adult patients with hemianopia, 10 healthy preschoolers (mean age 4.4 years), and 10 healthy adults (mean age 25.3 years) were tested with SVOP and OCT (focusing on the ganglion cell layer, GCL+)...
January 13, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29306856/mycophenolate-mofetil-treatment-in-a-patient-with-recurrent-lymphocytic-hypophysitis
#6
Hiroshi Sawachika, Shoko Kodama, Tomoyuki Mukai, Yoshitaka Morita
Lymphocytic hypophysitis (LHP) is a relatively rare disease characterised by lymphocytic infiltration of the pituitary gland, resulting in pituitary dysfunction. LHP is generally responsive to corticosteroid therapy, but cases with recurrence require clinicians to select second-line therapy. We report here the case of a 58-year-old patient with LHP who developed panhypopituitarism and bitemporal hemianopia. He responded to prednisolone 40 mg/day but relapsed during tapering. The prednisolone dose was increased again and mycophenolate mofetil (MMF) was added...
January 6, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29234224/chiasmal-syndrome-clinical-characteristics-in-patients-attending-an-ophthalmological-center
#7
Aline Astorga-Carballo, Juan Carlos Serna-Ojeda, Mayra Fabiola Camargo-Suarez
Purpose: To present the clinical characteristics of a group of patients with the diagnosis of chiasmal syndrome who attended a large ophthalmological institute. Methods: Retrospective, observational clinical study with the review of medical records of patients with a diagnosis of chiasmal syndrome. The following variables were assessed: demographic characteristics, chief complaint upon presentation, best-corrected visual acuity (BCVA), presence or absence of diplopia, pupillary responses, optic nerve head morphology, etiology, and results from the ancillary tests including Ishihara test, Goldmann visual field (GVF) perimetry and neuroimaging...
October 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/29209271/development-and-implementation-of-a-new-telerehabilitation-system-for-audiovisual-stimulation-training-in-hemianopia
#8
Francesca Tinelli, Giovanni Cioni, Giulia Purpura
Telerehabilitation, defined as the method by which communication technologies are used to provide remote rehabilitation, although still underused, could be as efficient and effective as the conventional clinical rehabilitation practices. In the literature, there are descriptions of the use of telerehabilitation in adult patients with various diseases, whereas it is seldom used in clinical practice with child and adolescent patients. We have developed a new audiovisual telerehabilitation (AVT) system, based on the multisensory capabilities of the human brain, to provide a new tool for adults and children with visual field defects in order to improve ocular movements toward the blind hemifield...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29201538/vision-in-stroke-cohort-profile-overview-of-visual-impairment
#9
Fiona J Rowe
Aim: To profile the full range of visual disorders from a large prospective observation study of stroke survivors referred by stroke multidisciplinary teams to orthoptic services with suspected visual problems. Methods: Multicenter prospective study undertaken in 20 acute Trust hospitals. Standardized screening/referral forms and investigation forms documented data on referral signs and symptoms plus type and extent of visual impairment. Results: Of 1,345 patients referred with suspected visual impairment, 915 were recruited (59% men; mean age at stroke onset 69 years [SD 14])...
November 2017: Brain and Behavior
https://www.readbyqxmd.com/read/29199507/asymmetric-oculomotor-apraxia-optic-ataxia-and-simultanagnosia-with-right-hemispatial-neglect-from-a-predominantly-left-sided-lesion-of-the-parieto-occipital-area
#10
Yasuhisa Sakurai, Masanori Fujimoto, Kensuke Hamada, Izumi Sugimoto
INTRODUCTION: Bálint's syndrome involves bilateral damage to the parieto-occipital area. The extent of the effect of unilateral damage on the Bálint's triad (oculomotor apraxia, optic ataxia, and simultanagnosia) remains unknown. METHODS: We examined a 63-year-old, right-handed woman who developed right hemianopia, oculomotor apraxia, optic ataxia, simultanagnosia, and hemispatial neglect (HSN) for the right after a cerebral infarction, with detailed neuropsychological tests, magnetic resonance imaging, and single photon emission computed tomography (SPECT)...
December 2, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/29196364/lesson-of-the-month-2-use-of-thrombolysis-for-ischaemic-stroke-in-pregnancy-a-case-report-and-review-of-literature
#11
Asim Khan, Paris Hosseini, Branimir Nevajda, Sami Khan
A nine-week pregnant 33-year-old female presented with sudden-onset right-sided hemiparesis, hemisensory loss, dysarthria and homonymous hemianopia. She was known to have eleven previous miscarriages and used recreational drugs. A CT-head was unremarkable. The patient was subsequently diagnosed with an acute thromboembolic infarct and chose alteplase after counselling. During thrombolysis an ultrasound identified a foetus with no concerning features.  A post-thrombolysis CT revealed a left-sided posterior cerebral infarct...
December 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/29145178/minor-hemisphere-major-syndromes
#12
Antonio Carota, Julien Bogousslavsky
A right "minor hemisphere" does not exist as the right hemisphere is dominant for awareness (nosognosia), spatial attention, emotional regulation, facial and voice expressions, visual recognition, and topographical orientation. Without the right hemisphere, the world would be flat, deprived of general and spatial attentions, pointing preferentially to the right side of the space, lacking visual experiences and emotions, exhibiting diminished awareness of the self and environment. Clinical-related syndromes of the right hemisphere are unilateral spatial neglect, object and face visual agnosia, the anosognosia for hemiparesis and/or hemianopia, misidentification syndromes, mania, and other obsessions for the food and the body...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29128327/clinical-predictors-of-stroke-mimics-in-patients-treated-with-recombinant-tissue-plasminogen-activator-according-to-a-normal-multimodal-computed-tomography-imaging
#13
Stephane Olindo, Martin Chardonnet, Pauline Renou, Cyrielle Coignion, Sabrina Debruxelles, Mathilde Poli, Sharmila Sagnier, François Rouanet, Igor Sibon
BACKGROUND: Multimodal computed tomography imaging (MCTI) is increasingly used for rapid assessment of acute stroke. We investigated characteristics and final diagnoses of patients treated with recombinant tissue plasminogen activator (rt-PA) while admission imaging was unremarkable. METHODS: From our prospectively collected stroke database (2013-2016), we identified consecutive patients treated with rt-PA on the basis of an unremarkable brain MCTI and assessed with a 24-hour follow-up brain magnetic resonance imaging (MRI)...
November 8, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29110092/tracking-posttraumatic-hemianopia
#14
Thomas Decramer, Karel Van Keer, Peter Stalmans, Patrick Dupont, Stefan Sunaert, Tom Theys
Hemianopia after traumatic brain injury is not infrequent and results from retro-chiasmatic lesions. Differentiating optic pathway lesions can be challenging with classic imaging. Advanced imaging techniques as an investigational tool for posttraumatic hemianopia are discussed and their pitfalls highlighted through an illustrative case study. In a patient with posttraumatic hemianopia, MRI at 8 weeks and 2 years after trauma were analyzed. Diffusion tensor imaging (DTI) and morphometric analysis of the primary visual cortex (V1) were performed...
November 6, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29075905/vertebrobasilar-dolichoectasia-causing-homonymous-hemianopia-a-case-report-and-review-of-the-literature
#15
Ladina Greuter, Jean-Yves Fournier
A 73-year-old man was diagnosed with an incidental finding of right homonymous hemianopia and presyncopal spells. Magnetic resonance imaging revealed a vertebrobasilar dolichoectasia (VBD) with compression of the left optic tract. VBD is defined as an elongation and dilatation of the basilar artery. Only a few cases have been described in the literature of VBD causing optic tract compression. So far no treatment option has been described for these cases, while surgical options exist for compressions of other cranial nerves, most commonly the trigeminal nerve...
October 26, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29067219/driving-with-hemianopia-v-do-individuals-with-hemianopia-spontaneously-adapt-their-gaze-scanning-to-differing-hazard-detection-demands
#16
Concetta F Alberti, Robert B Goldstein, Eli Peli, Alex R Bowers
PURPOSE: We investigated whether people with homonymous hemianopia (HH) were able to spontaneously (without training or instructions) adapt their blind-side scan magnitudes in response to differing scanning requirements for detection of pedestrians in a driving simulator when differing cues about pedestrian eccentricities and movement behaviors were available in the seeing hemifield. METHODS: Twelve HH participants completed two sessions in a driving simulator pressing the horn when they detected a pedestrian...
September 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29042528/-a-case-of-ruptured-anterior-communicating-artery-aneurysm-with-visual-field-defects-and-deteriorating-to-severe-vision-loss
#17
Kazuki Sakakura, Go Ikeda, Yasunobu Nakai, Noriyuki Watanabe, Masanari Shiigai, Kazuya Uemura, Tetsuya Yamamoto, Akira Matsumura
Although Terson's syndrome is a well-known cause of vision loss due to intracerebral aneurysm rupture, optic nerve neuropathy can also occur because of other causes. Here, we report such a case, i.e., a ruptured anterior communicating artery aneurysm accompanied by vision loss and visual field disturbances due to a cause other than Terson's syndrome. A 47-year-old man presented with right superior altitudinal hemianopia. Computed tomography (CT) showed subarachnoid hemorrhage (SAH), and three-dimensional CT angiography revealed an anterior communicating artery aneurysm...
October 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/29018750/management-of-diplopia-with-visual-field-defects
#18
Ling-Yuh Kao, Chun-Hsiu Liu, Meng-Ling Yang
PURPOSE: The management of diplopia can be challenging in patients with a concurrent visual-field (VF) defect. We conducted a retrospective chart review to analyze and compare treatment outcomes for different types of VF defects. METHODS: A retrospective chart review. RESULTS: Seven patients with diplopia and VF defects were identified during the study. Four had bitemporal hemianopia, one had homonymous hemianopia, and two had a constricted central VF...
January 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/28994265/recognition-of-giant-cell-arteritis-in-patients-with-polymyalgia-rheumatica-who-have-a-stroke-a-cautionary-tale
#19
Donald H Gutteridge, Frank L Mastaglia
An 82-year-old woman with polymyalgia rheumatica (PMR) on prednisone 7 mg daily was admitted to an acute stroke unit with a right homonymous hemianopia, a left posterior cerebral artery occlusion and occipital lobe infarct. She had raised inflammatory markers, did not have a temporal artery biopsy, and was discharged on the same dose of prednisone. After 21 months, off prednisone, her ophthalmologist, concerned about giant cell arteritis (GCA), restarted prednisone 40 mg daily, with rapid, profound visual improvement...
October 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28987906/visually-evoked-responses-from-the-blind-field-of-hemianopic-patients
#20
Javier Sanchez-Lopez, Caterina A Pedersini, Francesco Di Russo, Nicolò Cardobi, Cristina Fonte, Valentina Varalta, Massimo Prior, Nicola Smania, Silvia Savazzi, Carlo A Marzi
Hemianopia is a visual field defect characterized by decreased vision or blindness in the contralesional visual field of both eyes. The presence of well documented above-chance unconscious behavioural responses to visual stimuli presented to the blind hemifield (blindsight) has stimulated a great deal of research on the neural basis of this important phenomenon. The present study is concerned with electrophysiological responses from the blind field. Since previous studies found that transient Visual Evoked Potentials (VEPs) are not entirely suitable for this purpose here we propose to use Steady-State VEPs (SSVEPs)...
October 5, 2017: Neuropsychologia
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