Yesterday I was driving and had a sneezing fit (not unusual for me) and suddenly after a large sneeze I could not see. I was not blind but rather had a vision like looking through a kaliadscope. I felt light headed and very disoriented. I was able to slow down and move the care into a parking lot. I sat there for a few minutes with no symptoms except the vision problem. I did not try to get out of the car so I don t know if I would have been steady or not. No symptoms since.