Weird scratch-like spots showing on up on my screen, not sure how
Hey everyone, about a month ago I started to notice these little scratch-like spots along the edge of my display, but I'm not sure what they are. I baby my laptop and have never dropped nor has it ever aggressively hit anything, so I don't think it would be a crack. The things do not have texture either, like, they almost look like a discoloration of some kind. I thought maybe its the magnets but that doesn't make sense. I don't know, this is my 3rd macbook pro but my first retina and this issue has never happened on any of them. Like, every time I open the display I notice more of them and its really starting to bug me because I can't tell if its physical damage or not. It doesn't make sense for it to be physical but at the same time I don't see what could be happening otherwise. Any thoughts?
Pic is of the spots in one of the corners
MacBook Pro with Retina display, OS X Yosemite (10.10.2), Higher end model with 2 gig 750M