I get these when I'm trying to go to sleep. They're kind of eerie because the images will start out completely realistic, full color and detailed, like an image of a little girl, and then the color will fade as the image sort of melts and everything goes black. I also get a lighthouse effect in a pitch black room, left to right or right to left, dots of darkness growing into large circles over and over, and sometimes vivid static. When I wake up in the morning, I see mandala shaped static rings with strange details. Every now and then I go blind with static during the day--I've been told that's an optical migraine, but I think I might be an old TV set and just don't know it, yet. 