TL;DR:
Remove tooth
Shave down to a rectangle
Install plastic lens
Remove scar tissue from eye and replace it with cheek tissue
Implant the lens-tooth into the cheek so new cheek tissue will grow around it
Later they go back to remove the lens-tooth from the cheek and sew it into the front of the eye but behind the cheek tissue (theres a view port to see through).
Wild.
I recommend going to see the image in the article. It's not grotesque but very odd.