Board Thread:Naruto Discussions/@comment-5085906-20170731184405/@comment-30323490-20170731205234

It wasn't like that with Madara...he only did have one Rinnegan. It wasn't like when he was an edo and could convert his rinnegan to his sharingan.We need to remember that for some weird reason he started as an edo with the sharingan, not the rinnegan. When he became alive again, his eyes crumbled, since his original eyes were at Obito respectively at white Zetsu. After he received one of his rinnegans back, he received it as it was, and was not able to convert it back to his sharingan. It was actually impossible to, since we know that he lost a sharingan when he performed izanagi to survive against Hashirama and the eye that he received was the izanagi eye.The converting eyes thing was only an EDO scheme, since as we've seen, EDO are brought back in different stages of their live.Hiruzen was brought back as an old man, while Madara was brought back as an adult, yet he died as an old man.Also, as far as we know, only Sasuke's rinnegan retained his original eyes power. Madara couldn't perform his sharingan genjutsu purley because he didn't have a sharingan anymore.