[cjmb]

I think the visual aura part can be different for many people. I also thought I was having a stroke -- in my case the entire center of my vision in both eyes disappears.

But the brain is used to that behaviour (center-dead-spot from optic nerve) and has a prebaked solution: average/blend the inputs from around the dead-spot.

However my migraine-visual-aura center-dead spot is about the size of a 12" laptop screen, which results in horrifically nauseating visual "blending" happening nonstop. I tried to look at a book once and the only words I could read were the first & last words on each line. I tried to read a car license plate and could only read the last letter.

When the rate at which I got them increased from 1/6mo to 1/6week, I got a prescription & haven't had one since.