This is the fifth in a series of posts on Visual Processing. The blog post Don't Pay Attention to This is useful background information. Cover you left eye and look the dot within the circle, with your face roughly a foot from your screen. Move your head towards and away from the screen until the "x" disappears. Source: cabiatl.com Note that when you identify your blind spot, it is not truly blind. It is a continuation of the surrounding grid. You don't perceive a hole