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[Visual snow – disruptive but harmless].

Emilia Kerty1, Solveig E J Dalbro2, Ahmed Elsais3

  • 1Nevrologisk avdeling, Oslo universitetssykehus, Rikshospitalet, og, Institutt for klinisk medisin, Universitetet i Oslo.

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
|September 25, 2024
PubMed
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Visual snow is a rare visual disturbance causing constant, snow-like dots in both eyes. This review aims to increase clinician awareness of this poorly understood condition.

Area of Science:

  • Ophthalmology
  • Neurology
  • Visual Neuroscience

Background:

  • Visual snow is a rare condition characterized by persistent, all-encompassing visual static.
  • The condition is increasingly recognized, with more cases reported in recent years.
  • Many patients experience diagnostic delays and lack of specialist understanding.

Purpose of the Study:

  • To raise awareness of visual snow syndrome among clinicians.
  • To provide a comprehensive overview of visual snow for medical professionals.
  • To facilitate earlier diagnosis and appropriate patient management.

Main Methods:

  • This article is a clinical review.
  • It synthesizes current knowledge on visual snow.
  • It draws on case descriptions and existing literature.

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Main Results:

  • Visual snow presents as continuous, small, dynamic dots across the entire visual field.
  • Associated symptoms can include palinopsia, photophobia, and nyctalopia.
  • The etiology remains unclear, but potential links to neurological conditions are being investigated.

Conclusions:

  • Visual snow syndrome requires greater recognition within the medical community.
  • Further research is needed to understand its pathophysiology and develop targeted treatments.
  • Educating clinicians is crucial for improving patient outcomes.