just got to be careful which cobalt blue lenses you buy!basic ones cut the glare very effectively-but have minimal protection from ultraviolet and infra red light.trouble with infra red is it doesn't hurt if you get too much-just damages eyes slowly.you only find out too late that damage done.good blue cobalt lenses cut out both uva and uvb light as well as blocking infra red .suggest you look for glass furnace workers glasses because they meet all the required criteria
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Ferguson
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