Goggles

Question
I saw the movie Death Hunt ( based in the cold Yukon). One of the actors wore a pair metal goggles with what appeared to be slices in the metal, they look very similar to the ones wore by the man in this picture.

http://www.mrolaf.com/OTHER/goggles.jpg

Can you please tell me what these type of goggles are called and what their main purpose is?


Answer
I'm affraid I've never seen or heard of these before.  I would assume though that they are for very bright situations similar to what you would find on a mountain when the sun's light reflects off of the snow.  I would think that this type of lens would only let enough light through to allow the user to see enough to function.  Sorry I couldn't be of more assistance.

Nick