Oh man. Hope everything goes well with your eye.

... for me it's easy, when things go wrong, to cling over-tightly to plans I'd made before. The century isn't the most important thing in your life right now. Obviously you want everything to be back the way it was, but first things first. Let your eye heal. Do what your doctors say that you can to maintain your fitness. Re-assess when you're allowed back on the bike.