Board Thread:Versus Debates/@comment-30168130-20170715234632/@comment-734582-20170719202251

Lorenzo.r.2nd wrote: u just said that his eye is different from a byaku cuz of the nue's chakra. The basic abilities of Boruto's eye are that of Hinata's byakugan. She too can see spirits (and the Nue appears to be a spirit). But unlike Hinata, Boruto can't see 360 degrees or really far. He also could only see the Nue's chakra and it's tenketsu, once more relating to Hinata's ghost-seeing abilities.

It's not clear why Boruto's eye is blue, but it could be anything. It could be that the Byakugan overrides the normal "pure eye" coloration. It could be blue because the Nue's chakra is blue, and we've seen with both Kurama and Sage Mode that chakra can cause the eye color and design to change.

None of this requires the Nue to change Boruto's DNA.