As a glass wearer I like projects involving 3d printed glass frames. JZ411 presented his project on instructables and they look interesting. The lenses don't fit perfectly but they stay in frame. Also the edges on the frames look sharp which could irritate the skin on contact spots (nose, ears).
http://www.instructables.com/id/3d-printed-prescription-glasses/ by JZ411
http://www.instructables.com/id/3d-printed-prescription-glasses/ by JZ411
