Known Johnson experienced a visual migraine, which is when the blood vessels in the visual center of the brain are affected, causing weird vision sensations. He then created a flash animation to show others what the experience is like. Link -via Metafilter
Known Johnson experienced a visual migraine, which is when the blood vessels in the visual center of the brain are affected, causing weird vision sensations. He then created a flash animation to show others what the experience is like. Link -via Metafilter
They last anywhere from 5 to 20 minutes. Kind of nauseating when they first occurred a year or so ago, now I just wait them out. Very annoying, though, since they don't disappear when I close my eyes. And mine are a bit more transparent than the movie version.
I wonder why he didn't just pull over and wait it out, rather than trying to 'pay close attention to his surroundings' while it went on for a half-hour.
September 25th, 2008 at 3:45 pm
I read the guy’s retelling about how this happened when he was driving, etc…
I wonder why he didn’t just pull over and wait it out, rather than trying to ‘pay close attention to his surroundings’ while it went on for a half-hour."
Because Migraines aren't something that just come and go. You get home and hope it passes in time after depriving yourself of any sensory stimulation. If you're driving, you're pretty much boned until you are able to get someplace quiet and dark. The longer you are somewhere else, the longer the migraine will last and the more potentially severe it will become.
It goes on even when you close your eyes! And you can't help but try to follow it with your eyes... Very disturbing.
It kept gradually getting worse over about 20 minutes until everything was white, and I couldn’t see anything. And it dissipated after about 5 minutes, but I was light headed the rest of the day.
I called my eye doctor, and told her, and she descibed it as an 'optical migraine'.
I’m glad it hasn’t happened again.
I would NOT drive during one of these. Just the light headedness would be enough to make me pull over.
I used to get migraine headaches (went away when I quit using The Pill) and while this phenomenon is similar to the pre-migraine aura I used to get, it isn't quite the same.
Glad to see someone has come up with a graphic of it, though, as I've never been able to describe it to anyone either.
The first time it happened I was playing badminton and after a while I was very lightheaded and only had a small patch of unobstructed vision. It was frightening at the time as I had no idea what was going on.
I would describe my version of it as pouring a liquid on your field of vision that heavily refracts the light, as well as the whole rainbow flashing colors thing...
It's only in the last few years that I learned it's a sort of migraine.
I'm glad I have something to show people, as it was really tough to describe.
Thanks!