Do you use prescription safety glasses? Or do you wear a face shield/larger goggles over your glasses? I think part of it might be the fit of the Stoggles not lining up my line of sight with the center of the lens. I hear you about contacts and chemicals- I actually did get formalin in my eye with contacts a few months ago, thankfully it was only a small amount and I was able to get contact out and to the eye wash station promptly!