Implants and artificial body parts

[Mordent]

         I also thought of an eye-replacer, basically a tube-like device which allows the user to replace (or just amputate if device is empty) eyes...

Eye-surgery is already incredibly straightforward (probably too much so, to be honest). There really isn't a need to speed it up.

I'm also against anything that gives doctors/roboticists less things to do (why would anyone ever do normal eye-surgery again if they could just use this then apply a bit of styptic?).