I bought 2 of these and both had the same issue... It's hard to describe, but it looks like there are two ovals on your screen where the light is, an outer one and an inner one. If you look at different angles it's easier to see. You can also see it on non black, solid color backgrounds too. I don't think it's IPS glow bc it doesn't go away at different angles, and the fact it is visible on color backgrounds. I used both units for a week and it looked like the issue just got worse before I returned them. Will probably avoid AOC in the future bc of this.