BTW, eyes aren't the only thing that can get flash burned. Cover all skin that will be exposed to the rays. This type of burn is, as I learned from perhaps the same safety meeting as the above post, worse than a sunburn as far as the possibility of skin cancer!
I believe this due to the concentrated UV rays inherent to welding flash. Watch American Chopper, Muscle Car, American Hotrod, etc. They, quite often, weld without skin protection, and to me this is stupid and bad television. Try not to mimic them except for the awesome projects they produce. I shall stow my soapbox now LOL