Joined 14 years ago
[1] http://onlinelibrary.wiley.com/doi/10.1111/head.12378/full
I've also heard of visual snow, which seems to be related to migraines.
http://en.wikipedia.org/wiki/Blue_field_entoptic_phenomenon
http://f1000.com/posters/browse/summary/1090714
http://new.hulu.com/labs/tagging
[1] http://onlinelibrary.wiley.com/doi/10.1111/head.12378/full