Facts About Visual Snow


Visual Snow Syndrome is a devastating neurological condition that can affect an individual’s vision, hearing, and cognitive functioning. Most often, the condition causes a person to process visual information abnormally, making normal life more difficult.

The exact cause of Visual Snow is still unknown. Research indicates a probable connection between hyperactivity in the visual cortex of the brain and the origin of this syndrome. Moreover, Visual Snow is a neurological (brain-related) condition, not ophthalmological (related to the eyes) in nature. It is a brain-processing issue unrelated to the structural integrity of the eyes.

The diagnosis of Visual Snow Syndrome is difficult because although it affects the eyes, ophthalmologic/optometric examinations typically yield “normal” results. There is not yet an evidence-based treatment or current cure available for Visual Snow.


Visual Symptoms

  • Snow-like dots all over the field of vision
  • Small floating objects or flashes of light
  • Sensitivity to light (Photophobia)
  • Continuing to see an image after it is no longer in the field of vision (Palinopsia)
  • Seeing images within the eye itself (Entoptic phenomena)
  • Other visual effects such as starbursts, halos, and double vision (Diplopia)

Non-Visual Symptoms

  • Ringing, humming, or buzzing sounds (Tinnitus)
  • Feeling detached from yourself (Depersonalization)
  • Symptoms of anxiety and/or depression can sometimes develop as a result of having to deal with a constant medical condition like Visual Snow

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To all the people who have Visual Snow that have been marginalized and/or have had trouble explaining what Visual Snow is to their friends, family, and doctors, this short video is for you. The traditional explanation of our condition is often lengthy, complex, and scary, but it doesn’t have to be.

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