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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

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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.