From the MAKE Flickr pool

Behold Igaaks’ CNC plasma torch-cut sunglasses, as demoed at a recent TechShop Durham monthly meeting -

Material is copper, bent by hand, then heat treated, then coated with acrylic.
[...]
The only thing it might need is some kind of padding for the nose, and after talking with folks at the Meet-up, I think a small piece of molded silicone would work.

Though they look decidedly retro-future, the original Inuit design dates back about 2,000 years -

Before the introduction of tinted sunglasses, the Inuit wore slitted snow goggles to prevent snow blindness when travelling in the brilliant sunlight of spring.

Read more on The Winnipeg Art Gallery’s site