How Is Visual Snow Syndrome Diagnosed?
To make this diagnosis, your healthcare provider will:
Take a health history
Complete a physical examination
Refer you for an eye exam
Conduct a neurological exam
Before diagnosing visual snow syndrome, other medical conditions need to be ruled out. The diagnosis will be made if you have seen "snow" or "static" consistently for longer than three months and have two or more of the following symptoms:10
Sensitivity to light
Impaired night vision
Seeing something when it is no longer there
Other visual changes, such as seeing floating objects
A History of Misdiagnosis
In the past, people with visual snow syndrome were often misdiagnosed. Common misdiagnoses included:
Migraine
Psychogenic disorder, which means the symptoms have a psychological root
Post-hallucinogenic drug use flashback
Most people with visual snow syndrome, however, have no history of drug abuse. Their symptoms also don't get better with standard migraine treatment.
Today, healthcare providers know more about visual snow syndrome and are better at spotting it. If you think you have the condition but were diagnosed with something else, consider getting a second opinion.
There's still much to know about visual snow syndrome. For this reason, a diagnosis may be elusive at first. Your healthcare team may include a neurologist, an ophthalmologist, and a psychologist.
I would suggest seeking out a clinician who has experience of dealing with Visual Snow patients. Many can be found via the internet and you can usually find someone within reasonable travelling distance to your location. If this is not possible then a video or telephone appointment may be offered.