stupid me looked at welding for a second

My buddy was welding some exhaust for me, and I made the dumb mistake of looking at the weld for about a second or two. :banghead:
I was about 10 - 12 feet away.
My eyes feel ok now - just happened an hour ago. Are they gonna really burn later? was 1 or 2 seconds not enough time to do damage?
Is there anything I should do now?