Q. Why you always use lane cover?
I have some wounds in my cornea. Ah don't worry about it. It just tiny scratches.
Anyway, it sometimes makes my eyes hurt when i read a book or when i see the screen.
Especially the 'ghost image' of the note harasses my eyes. But lane cover is really helpful for relieving the pain of the ghost image.
So i should use lane cover except heavy SV map.
That's why i can't play TAIKO or CTB mod as long time as mania.