One man looked at the Electroic Arc Welding for a while, and he went home, then he took out his Contact lens, Not aware that the Electric Arc that had generated some high power micro wave that had already evalporated his tear between the Lens and the Retina.
When he took out the contact lens, the lens was actually adhered with the retina. So he was blind after he removed the lens together wiht the Retina!
There has been some Poster warning for the Contact lens users in Australia...in 1982
If you wear Contact lens, do not look at the high brightness Electric Arc welding!