Board Thread:Naruto Discussions/@comment-24824148-20160724215526/@comment-25271914-20160725140027

I think it depends on how much you us it, as kakashi hardly used it at all. The only thing that bothers me is that obito was never mentioned having a problem with his eyesight. He was using MS most of the time, but nothing happened. It could be just a mistake by kishi, or there could be another reason. Like it's turning blind a lot slower because he had just one, or somethin like that. But to be honest, I think it's just lazy writing by kishi.