>>274352085
Items in VR appear very close to you so your eyes switch focus to close distance like they would do in real life. But the actual focus distance of light coming from displays is about 2 meters or so, so things that are close end up not in focus. 
I also have "general" blurriness of the whole screen if I don't adjust headset at the right position, that's probably because I'm wearing glasses and there are now two lenses for light to pass through. Or maybe not, but I can't see shit without glasses so I won't notice the blur.