Board Thread:Naruto Discussions/@comment-24120130-20140607191120/@comment-5407586-20140607203041

Because Hagoromo said "my mother had the Byakugan and the power of the Sharingan"? Well, Sasuke said "a genjutsu cast by a Rinnegan can be dispelled by another Rinnegan" while talking about the Infinite Tsukuyomi so I guess Kaguya's third eye is in fact a Rinnegan.