What is behind your eyelids? The first thing may be blackness. Then you may perceive small little dots. The dots are like the ones that create the pictures on your television. There may be flashes of light as you turn your head toward a light source with your eyes closed. You might possibly see some after images, that is images of the last thing you saw before you closed your eyes. If you keep your eyelids closed for too long then eventually you will fall asleep.