Is it normal to see dots everywhere?

Ive been able to see these pixelation like dots ever since i can remember. I can see them with my eyes open or closed. I am able to start controlling the shapes and am starting to control the color of these dots once they form a shape. I have always seen after images as well. Even with people and objects that are not glowing and even in darker settings i see after images and wonder if there is any correlation? I have seen other threads on this subject and know im not alone. I want to know if there is anyone that knows whats going on exactly or a community of some sort? Can any of you relate? Give me your experiences if so. Any useful information is appreciated. I researched snow vision and its still there with my eyes closed and in a blackedout room. Im not talking about the blue sky and white dots due to the white blood cells near the retina either.