I have found that I do better welding with my glasses off - they are progressive lenses, and rarely can I get them in the right position. I've tried putting a magnifying glass in the helmet, but that didn't really work. So, glasses off, and I get my head close to the action, and I can see what's going on. FWIW, in addition to presbyopia (sp?), I've been near-sighted all my life, so that may be part of why this works for me.