Results 31 to 40 of about 3,449,316 (156)

Visual Snow Syndrome is unstable: A longitudinal investigation of VSS symptoms in a Naïve population

open access: yesAnnals of Clinical and Translational Neurology
Objective This study aimed to investigate the nature of subclinical Visual Snow Syndrome (VSS). We sought to develop a means of recruiting naïve participants with subclinical VSS symptoms to participate in research; and to understand whether subclinical ...
Amy Claire Thompson   +2 more
doaj   +2 more sources

Case report: Visual snow as the presenting symptom in multiple evanescent white dot syndrome. Two case reports and literature review

open access: yesFrontiers in Neurology, 2022
PurposeMultiple evanescent white dot syndrome (MEWDS) usually manifests as photopsia, enlarged blind spots, scotomas, and blurred vision, which can be classified into positive and negative visual phenomena.
Chenyue Hang, Yan Yan
doaj   +1 more source

Distinct Patterns of P1 and C2 VEP Potentiation and Attenuation in Visual Snow: A Case Report

open access: yesFrontiers in Neurology, 2021
Visual snow syndrome, characterized by persistent flickering dots throughout the visual field, has been hypothesized to arise from abnormal neuronal responsiveness in visual processing regions.
Alison M. Harris
doaj   +1 more source

A visual conflict hypothesis for global-local visual deficits in Williams Syndrome: simulations and data [PDF]

open access: yes, 2005
Individuals with Williams Syndrome demonstrate impairments in visuospatial cognition. This has been ascribed to a local processing bias. More specifically, it has been proposed that the deficit arises from a problem in disengaging attention from local ...
Abreu, M.A.   +4 more
core   +8 more sources

Visual snow syndrome and migraine: a review

open access: yesEye, 2023
AbstractVisual snow syndrome is a neurological condition characterized by ongoing prominent phenomena described consistently as tiny dots moving across the entire visual field, often associated with complex visual symptoms. These can take the form of afterimages, entoptic phenomena, nyctalopia and light sensitivity.
Elisa Martins Silva, Francesca Puledda
openaire   +2 more sources

Visual Snow Syndrome

open access: yesJournal of the Foundations of Ophthalmology
Visual Snow Syndrome (VSS) is a neurological disorder of visual perception characterised by continuous, flickering dots resembling the noise of a detuned television, affecting the entire visual field. This “visual static” or “visual snow” is continuous, may be black-and-white or coloured, and can appear flashing or transparent.
Kenneth J. Ciuffreda   +3 more
  +5 more sources

Diagnostic Evaluation of Visual Snow

open access: yesFrontiers in Neurology, 2021
Introduction: To determine which patients with visual snow (VS) and VS syndrome (VSS) require standard ophthalmologic testing including automated visual field and which patients require further testing such as macular spectral domain optical coherence ...
Michael S. Vaphiades   +4 more
doaj   +1 more source

Visual Snow: A Case Series from Israel

open access: yesCase Reports in Ophthalmology, 2020
Our aim was to examine the symptoms and clinical characteristics of visual snow in a group of 6 patients from a Department of Ophthalmology and a Department of Neurology. Visual snow is now recognized as a true physiological disorder.
Eran Berkowitz   +4 more
doaj   +1 more source

Ebstein anomaly associated with retinal venular dilatation, migraine, and visual snow syndrome: a case report

open access: yesBMC Ophthalmology, 2022
Background To present a case with Ebstein anomaly, a rare congenital heart disorder, with ophthalmological and neurophthalmological signs and symptoms. To date, retinal venous dilatation and visual snow syndrome have not been previously been published in
P. T. V. M. de Jong   +2 more
doaj   +1 more source

Hallucinogenic Persisting Perception Disorder: A Case Series and Review of the Literature

open access: yesFrontiers in Neurology, 2022
BackgroundHallucinogen persisting perception disorder (HPPD) is characterized by the re-emergence of perceptual symptoms experienced during acute hallucinogen intoxication following drug cessation. The underlying pathophysiology is poorly understood.
Hannah Ford   +8 more
doaj   +1 more source

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