Black dot seems to appear everywhere in the intersection
Circle illisiuon. Stare the circle in the center of the picture.
Scroll this page up and down and watch the center square magically move.
Stare the image below and slowly move your head toward and away from the screen.
Look at the red lines, do they appear to be wavy?
Focus on the middle of the square.
This triggered violent epileptic fits and seizures, which doctors eventually said could only be prevented by removing half of her brain.
"It was very scary, because you just can't imagine what your child will be like after such a dramatic brain surgery" mother, Shelly Mott told Ann Curry on NBC's Today Show.
"It just doesn't seem like they can be the same child".
"It was absolutely right choice. And, really, for us, when we knew what she had, and we knew this is our only option to help her, the risk was something that we were willing to deal with because her quality of life was so poor."
Cameron has recently finished her physiotherapy and can now run and play, with a slight limp.
The school girl also lost some of her peripheral vision.
Doctors knew that removing the right side of the brain - which controls the left side of the body - meant she would be paralysed when she woke from the surgery.
But they also knew that childrens' brains are capable of rewiring themselves and taking over functions.
Cameron walked out of the hospital four weeks after her surgery.
When asked if she had any lingering effects from the surgery, Cameron said, "No. None at all."
Asked what her goals were, Cameon said: "I want to be a ballerina when I grow up."
