Optical illusions are always difficult. The creators use a combination of color, light, and pattern to trick your eyes and brain. Often times, the illusion is completely deceptive and you see what's clearly visible on the surface. However, if you are sensitive enough, you may notice small details that will lead you to the right answer. Get ready to test your eyesight and brain power! This optical illusion test will show you what you see that 95 percent of people don't.