MBP display is suddenly in poor resolution/ unreadable

I opened my MBP today and immediately realized that something was wrong with the screen. Text is almost unreadable because it is so pixelated. It is impossible to see the blinking text curser. Pictures and everything else are also very off. Vertical lines of pixels all across the screen are much more apparent than usual. I know that no settings were changed and looking through system preferences, everything looks like it should.

Any suggestions for fixing this? I can't even think of what might've happened..