I get VERY bright white lights (and it's not heaven!!) whenever I look down ( as when trying to focus on something lying on the ground). There are often horizontal lines running across these lights and it's very difficult to see anything as they cover most of the screen. I assume it's a setting that needs adjusting, but which one? Looking straight ahead everything is perfect, so it seems like it's to do with the viewing distance. As most people know, I'm extremely non-technical!!