This site provides information about a condition known as "visual snow". It is also sometimes described as "visual static", "grainy vision" or "little white dots" flickering across the entire visual field. Please visit the forum after you've explored the information available here. Remember, you are not alone.

HPPD Online
HPPD is a disorder caused by the ingestion of LSD or other hallucinogens whose symptoms may include visual snow.

Migraine Aura
Visual snow sufferers are sometimes diagnosed with persistent migraine aura, a complication of migraine with aura. Visit this site to learn more about the condition, its possible treatments and differential diagnosis.

LymeNet
The symptoms associated with HPPD and persistent migraine aura have also been linked to Lyme disease by some on Internet message boards. LymeNet provides a variety of information about the disease.

Vision Simulations
Provides images and simulators for a variety of visual problems, including visual snow, ghosting, starbursts, and floaters.

Tinnitus Support
Visual snow sufferers often also complain of chronic tinnitus. This is a support group for those with persistent tinnitus.