Board Thread:Naruto Discussions/@comment-4682609-20140806081616/@comment-3568954-20140806103820

it is my theory that what Obito meant is that one day he will go blind. lets put it this way Kakashi did not get the eyes transplanted they awakened. meaning his new eyes manifested the sharingan because Obito's chakra was placed in side him. that means kakashi should from that point on now have uchiha chakra. and since the eyes actually awakened he should be able to turn them off. and since they are not transplants the light in them more than likely is brand new light and as such if they go blind it would likely be a couple decades before they go blind