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I took welding years ago at art school, and as I recall, when wearing the welding goggles used for oxy-acetylene welding (which I assume are the ones we are talking about) I couldn't see much of anything. I'm not sure it's such a good idea to wear them around or to drive. It might be better to look for actual sunglasses that are darker than the normal sunglasses (perhaps by prescription).
These must be a different kind, because it was easy to see in them and they shifted well from bright light to shadows.
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if you use wielding gogles all time they will hurt your vision
How so? I would be interested in hearing more about that.