can welding cause blindness
arc welding blindness. Anyone who does any welding or is watching someone do welding needs to wear a welding helmet. There are cases when it is not absolutely necessary. For example, thinking getting flashed by MIG welding on a sunny day is not too bad. The reason a helmet is necessary is because of the insanely bright light given off by welding. Without taking safety precautions, this light can literally burn the insides of your eyes and cause temporary or permanent blindness. Part of the reason is that particularly in dark places, the eye cannot adjust to the change in brightness fast enough to prevent damage.