Board Thread:Boruto Discussions/@comment-29261733-20170713102406/@comment-734582-20170713121146

Namikazenaruto9 wrote: I don't think it's confirmed that he was actually talking about the eye. though it would make sense. More importantly, we don't know if it necessarily is exclusively about the eye. Apparently the Jougan was also a period in japanese history. Plus, the Nue had a strange eye design in it's seal. It could refer to multiple things.

The best thing would be to wait. I get that people are eager for answers, but it would really be best to see if we can learn more about what exactly Toneri meant.