25 links have been added on 8 ideas about #glasses.
  1. Yeah, like this review says, its almost impossible to place the mirrors on the lense in order for it to see past your head. So depends on which type of shades you have.

  2. The lenses can break easily so I suggest reading this first

  3. You can do this with some frame types but it depends on the design. Here is a guide to the types that allow you to do so.

  4. Took years but I think these are on their way to the market now.

  5. Been patented, not sure if the idea has been done, especially to allow your glasses to focus on whatever your eyes are focussing on.

  6. not possible according to Instructables users – however, easy with digital glasses.

  7. Colorblind glasses exist already https://www.treehugger.com/inventor-creates-sunglasses-that-make-people-colorblind-4863170