Vison defects and nausea

Conner's been having a rough spate with nausea in the mornings, and today his mother called me an told me that the vision in his left eye had gotten very fuzzy and blurry, and that Conner's pediatrician told her to go to the ER.

I really, really, really would like this to settle down so he can get back to normal, or at least as normal as things get. He's still looking at the post-radiation fatigue to start in about a month, too.

Times like this make me want to scream "WHY?" Why does any of this stuff have to happen to any child.