Blurred vision to the point of no eye sight, felt sick to my stomach and twitching. My son and I had just got into the grocery store and it started. I started to not feeling well, then the onset of the difficulty seeing. I tried to continue but could not focus, even after standing with eyes closed. I asked my son to take me back to the car where I could wait. I had to hold his hand while he got me out of the store I couldn't see and while walking to the car I also started to twitch. I became very emotional once I got into the car.