RMB tiny white spots over the screen (no dead pixels)

This week when I opened my 12'' MacBook I saw over the screen small white spots over the whole screen. At first I thought it might be a smug on the screen but a quick wipe down and close inspection from various angles confirmed it was something else. I shut down and turned the RMB back on. The tiny bright white spots were persistent, though only noticeable amid a dark background or when the sun reflects on the screen.

Anybody has the same problem or does know what is the best solution to resolve this problem? I didn't make a case at Apple yet, because I'm in a doubt if Apple repair this under warranty else I need to get in touch with my insurance company.