My aching eyeballs after practicing FCAW.

I think when you first start out, welding is like a big event for your eyes. Straining to see the puddle and what you are actually welding etc. After a while you start adjusting to what you are doing that feeling will subside.I use a magnifier to help me see the work better. I also have one of the newer Miller helmets that gives a better "picture" of what you are looking at. After a while it will be no big deal and that will subside. also
have good ventilation and good equipment
digital-elite-series-welding-helmets-m00471