We have done quite a few  posts on Eco Friendly Eyewear and Unitdot just came to our attention because of material use of bamboo an easily renewable resource. A fairly new company Unitdot (2008) is based in Hong Kong and from the look of the eyewear, I think they will make a a big splash. Currently they are being offered through Excentree, on online company based in the UK.

Unitdot Eco Friendly Eyewear
Bamboo Temples