Something happened to me the other day, and i want to know if it is Ok. I was sitting class and suddenly i got hot. I asked the teacher if i could get some water, she let me go. When i got out there my eyes started doing something. First let me tell you that my school has blue and white checkered floors. As i was walking, still upright, i lost my vision and saw nothing but blue and white checker squares. I was not dizzy or any thing, but since i could not see, i bumped into a wall and had to get stiches over my eyebrow. I want to know what caused this, and if there is a chance that it will happen again. Please help me !