Board Thread:Naruto Discussions/@comment-26104388-20140919031519/@comment-26104388-20140922215822

Daywakler wrote: Maybe that's how Madara regained sight after awekening Rinnegan, makes sense. But being able to use it indefinitely would make a person immortal, a god which i don't like at all.

No, Madara regained his eye after waking the Rinnegan. Yang Healing comes from the Sun Tattoo aka Six Paths Yang Power, which Naruto got from the Sage.