Visual Snow Statistics

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Visual Snow Syndrome Statistics

On this page, the Visual Snow Initiative presents key statistics based on published clinical research regarding the prevalence, demographic characteristics, visual and non-visual symptoms, and global impact of the neurological condition Visual Snow Syndrome (VSS).

The statistics below offer important insights into how the condition presents across different groups, highlighting symptom patterns, frequency, and overall effects. If research progresses, the understanding of Visual Snow Syndrome can continue to evolve.

All data presented are based on peer-reviewed clinical research, published scientific literature, and insights from VSS researchers around the world.

of global population experience Visual Snow Syndrome (VSS)

0 -3%

years old is the average age

will see static (with eyes open and closed)

0 %

have impaired night vision (nyctalopia)

0 %

experience migraines

0 %

experience headaches

0 %

experience tinnitus

0 %

have impaired night vision (nyctalopia)

0 %

experience paresthesia (“pins and needles”)

0 %

22%

experience tremors (involuntary, unintentional, rhythmic movements of the body)

50-60%

have mild balance disorders

40%

experience dissociative symptoms

81%

see excessive floaters

51.9%

have convergence insufficiency

0 %

have accommodative insufficiency

0 %

have normal uncorrected visual acuity

0 %

are nearsighted (myopic)

0 %

are farsighted (hyperopic)

0 %

had a sudden start to their symptoms

26- 0 %

experienced symptoms during childhood

0 %

reported a family history of similar visual disturbances

0 %

report their visual snow is monochromatic

73- 0 %

report their visual snow is achromatic

0 %

report worsening symptoms due to environmental factors

0 %

reported symptom reduction with chromatic filters

80- 0 %

preferred chromatic tints

80- 0 %

preferred yellow-blue spectrum filter

0 %

preferred BPI-Mu filter

0 %

preferred BPI-Omega filter

0 %

preferred FL-41 filter

25- 0 %

have issues with balance (difficulty maintaining body position/stability)

0 %

reported improved symptoms with oculomotor therapy

0 %

The number of countries where individuals with Visual Snow Syndrome have contacted the Visual Snow Initiative

The Visual Snow Initiative (VSI) has developed one of the largest global collections of new resources on Visual Snow Syndrome (VSS) with over 790 items, including videos, guides, articles, patient stories, tools and clinician listings for individuals, caregivers and healthcare professionals worldwide.

Visual Snow Syndrome affects people of all ages and backgrounds around the world, with no sex prevalence.

Among patients with Visual Snow Syndrome, males and females are equally represented.

Before 2019, it took an average of up to 9 years for an individual with Visual Snow Syndrome to receive an accurate diagnosis (due to the lack of awareness amongst the majority medical professionals).

For those who experienced the onset of Visual Snow Syndrome during childhood, symptoms started on average at 12.8 years old, with the youngest cases of developing Visual Snow Syndrome being at around 8-9 years old.

Since Sierra Domb founded Visual Snow Initiative in 2018, the number of research and publications for Visual Snow Syndrome has quadrupled.

Chromatic filters reduced palinopsia and photosensitivity by 50% on average.

Watch Now: Visual Snow Q&A - Dr. Beth Robertson Visual Snow Initiative Roundtable 2025 Visual Snow Q&A - Dr. Sui Wong Sierra Domb Announces Historic ICD Milestone for Visual Snow Syndrome Sierra Domb Shares VSI Updates on Visual Snow Syndrome