Board Thread:Naruto Discussions/@comment-1512913-20170417105433/@comment-3965545-20170418150430

Obito has half his body as Hashi DNA implanted so he can use wood release, Danzo had a Hashi face on his shoulder so he could use wood release, Madara had a hashi face implanted on his chest so he could use wood release by kabuto. If you don't have a Hashi face or a zetsu/hashirama clones's body parts you can't use Wood release. Back to the eyes thing.. the dna and chakra are always left in the eyes to a degree, so Izuna and Itachi should be able to use the eyes as if they were their own eyes. They should get the EMS too since the eyes chakra has merged. Therefor they could take their eyes back and be just fine with them.