Try to open and close your video-setting menue (Hotbars and Menue shouldn't be fuzzy) -> should switch back to normal view again. This also works in case of ongoing blurrieness effect after fully recovered bloodloss (healthy).
Just a suggestion: This "fuzzy" graphical bug occured, after logging in close to a pinetree faceing it. maybe its depending on how close the next loaded visible textures are in your line of sight....
Edit: Same graphical issue on the main menue background after logging out from the server with a pinetree in my face ^^
Will try to add a screenshot next time.