Had my eye grind/deburr to remove 3 rust ring from one eye and one on the other. The night before was a painful night of eye pain suffering. This happen 15 years ago. Work related and not from cycling, although it's possible to get rust ring from cycling. After the grind, my eye hurted more than before. Two hours later, my vision were totally blurry. It was scary as I thought I lost my vision but my eye doctor assured me it would be ok and to keep the patch on the eye for 24 hours. The next day they remove the patch and did I ever felt good again.