Risk found - stay on earth!
Risk. What with space travel? Who woulda thunk it?
I would have thought the risk of rapid firey death might weigh more heavily on your mind than bad eyesight; even given a chance of high-G combustion and bad eyesight I still want to go to spaaaaace!
I have shortsighted vision, which apparently gets BETTER so that's a win-win!
Have the now-grounded astronauts properly considered that far great risks of a desk job in a standard office? At least in space you don't die of boredom!