The effect on your eyes and subsequently on the world around after prolonged exposure to Guitar Hero or other such music games, where everything appears to be moving towards you.
"Man, I can't see straight after my stint on Guitar Hero last night, I think I've got Hero-Vision!"
The inability to escape the mindset that the popular music game Guitar Hero or other such music games creates. Sufferers of Hero-Syndrome will find it impossible to listen to songs not included in the game without imagining them being in the game, playing along with a phantom guitar controller or in more extreme cases dreaming about songs accompanied by scrolling frets and chords.
"Dude, what are you doing?!? Why are you playing air guitar to the Neighbours theme tune?"
"I don't know man, I can't help it! I think I have Hero-Syndrome"