Furniture designer Andreas Licht launched a wood spectacles collection, Herrlicht, several years ago that even the hinges are wood. Many eyewear designers who use wood, still use metal parts, not Herr Licht, 100% of his limited edition, handcrafted eyeglasses are made from wood.
When you go on the site, be sure to watch the video on how the product is made. You can also view a video on YouTube on how to open up the frame (to insert lenses)
According to his site he does exhibit at Silmo, we will definitely watch for him at Vision Expo.