What an awful experience you had! To think that something as common as a kidney stone, even after it's found, could lead to the risk of death or even blindness just sounds extraordinarily incompetent on somebody's part, at least to me unless there were extenuating circumstances.

I'm so sorry you had to go through so much pain and misery, and then be left with medical problems that might last a lifetime, just because of something like that. I do hope that you are much better now, and continue to improve as time goes by. Good luck and my best wishes to you!