After changing my desktop wallpaper on my LED-lit LCD monitor to one with a dark corner, I started seeing shadows on where the clock widget is while looking sideways at the screen. These shadows move with the turn of my head and disappear when I look straight. My question has two parts:
- Is this normal with LCD screens or is it a result of the fact that I wear very thick glasses?
- Does this effect have a name, and where can I read more about it?
A diagram illustrating light propagation would be very much appreciated.
Below is the image in question. I see dark blue shadows of the big numbers while looking sideways at them