[jtwigg]

I also suffer these though I've learnt to pick up on them before they happen so I can pull over or step away from the computer. This started when I was a teenager and has gotten better since my mid twenties (30 now). I've only had 2 attacks this year, though they have both been in August. I find taking a nap helps. I don't get a headache but I do eventually lose 99% of my vision.