Setting up Convergence & Eyesight

[zenith2134]

Every time I have to converge a tube and set purity, I feel as if I'm ruining my vision. It doesn't help that i wear contact lenses (or glasses). My vision is pretty miserable to begin with....

Then there's the issue of what the EMF radiation from the yoke and the subtle X-rays from the tube can do to a tv repairman.... Any thoughts on this?