Visual Snow: Seeing Tiny Dots Across Your Vision
Visual snow is a condition in which people see tiny white or black dots across their field of vision. It is often discussed alongside migraine, but it is not the same as a migraine aura.
What is visual snow?
The American Migraine Foundation (AMF) describes visual snow as seeing white or black dots spread across your visual field, the whole area you can see.
Visual snow often comes up in conversations about migraine because both can change how you see. But they are different problems, and a doctor will want to sort out which one, or whether both, are going on.
How visual snow differs from migraine aura
A migraine aura is a set of temporary nervous-system symptoms, most often visual. Based on AMF information, a typical aura:
- Builds up slowly over several minutes
- Lasts about 5 to 60 minutes, then fades
- Often looks like sparks, flashes, stars, zigzag lines or a spreading blind spot
- Usually comes shortly before a migraine headache, though sometimes no headache follows
When someone has visual symptoms that do not fit this pattern, the AMF notes that doctors may need to consider other explanations, and visual snow is one of them. This is especially true when visual symptoms show up without any headache.
How it is evaluated
A careful history is the starting point. Your doctor will ask what you see, when it began, whether it comes and goes, and whether you also have migraine attacks or other symptoms. Bringing written notes, like a headache journal, can make that conversation easier.
Visual snow sits where brain and eye care meet. The AMF notes that one of its board members, a headache specialist with a special interest in visual snow, works closely with neuro-ophthalmology (doctors who focus on how the eyes and brain work together) and optometry to give patients care from more than one angle.
Treatment and next steps
The patient education sources we rely on, the American Migraine Foundation, the National Headache Foundation and the American Headache Society, have published very little so far about how visual snow is treated. Rather than guess, we will leave that discussion to your visit, where Dr. Park can review your symptoms, explain what she finds, and talk through options that fit your situation.
If you also have migraine, managing your migraine is a separate and important part of care. Our migraine overview explains the phases of an attack, common triggers and the difference between acute and preventive treatment.
How Dr. Park can help
Visual snow is among the conditions Dr. Hannah Park treats. She is a dual board-certified, fellowship-trained headache medicine neurologist with over 10 years of specialized experience, and a lifelong migraine sufferer herself.
Every patient starts with a 90-minute new patient consultation with Dr. Park: a full review of your history, a neurological exam, a diagnosis and a personalized treatment plan. The practice is direct pay, with no insurance billing and no referral needed. See services and fees and our FAQ on HSA and FSA. Appointments are Monday to Friday, 9 a.m. to 6 p.m., usually within days.
Related
Sources
This page summarizes patient information from these organizations, in our own words. It is general education, not medical advice.
- Aura Without Headache or “Silent Migraine”: A Guide, American Migraine Foundation
- Understanding Migraine With Aura, American Migraine Foundation
- The American Migraine Foundation Leadership, American Migraine Foundation
Last updated October 27, 2026.
Seeing tiny dots in your vision? Talk it through with a specialist.
Every patient starts with a 90-minute new patient visit with Dr. Park.