My welding has always been handicapped by so-so eyesight (at least, that's my excuse). Well, finally the DMV forced me to get glasses and the doc sent me home with bifocals to correct an astigmatism as well as far sightedness. I have to admit, I can see much better with the glasses.
Prior to getting the glasses, I welded with a fixed lens, standard size. Usually with a 1.5x or 2x magnifier to boost my eyesight. Never saw the need for the big lens or for auto darkening (no tig in my shop at the moment).
Now, if I try welding with bifocals, I cannot tell if I am looking through the near lens or the far lens of the bifocals -- and neither is perfect for typical welding distances, anyway. If I welded for a living, I'd probably have to get glasses prescribed especially for welding distances. However, for HSM stuff, I can't justify the expense of special glasses at this time.
I'm thinking to try a large lens helmet. Also auto darkening so I can adjust my view for the best focus through the bifocals before striking an arc. I'm also thinking to just weld without bifocals and go back to the 2x magnifier.
Question is, how do the other bifocal welders deal with these issues ?