@Atunah: That's really interesting. I don't actually see bright spots or cones, I just see faint smudges/shadows. The "clear" areas, where there are no shadows, are all the same brightness as the rest of the screen, even along the edge. Update: Upon further scrutiny, I realize my Oasis does have bright spots if I look for them
Like Atunah, I also read with the light set at 8-10 most of the time. Unfortunately, the shadows are visible at that level. Pushing the light up to 11+ usually clears everything up to a nice, even light — but that's too bright for my eyes.
The smudges are light enough that I don't notice them once I'm immersed in reading, though they are distracting if I start looking for them and thinking about them — which happens if I spend too much time on MobileRead
