Adrian Goegl is not your run-of-the-mill optometrist. He is an industrial designer from Switzerland using his 3D-printed eyewear line, "Oak and Dust" as an example and vehicle for generative manufacturing and parametric design--both of which aim to revolutionize manufacturing by allowing designers to create and produce their products to go directly to market. Goegl also solves some common challenges specific to eyewear with his innovative use of cork. more details on these designs can be found here: http://3dprint.com/15590/goegl-3d-printed-glasses-cork

Here are some examples of these 3d Printed glasses: