Board Thread:Theories and Speculation/@comment-45128443-20200227141358/@comment-32685487-20200524021854

Coming back to this.. it was insinuated in the anime that the Uchiha were using Izanagi in one eye to undo certain realities including death, and then useing the other eye to undo the blindness that resulted in both eyes.. essentially abusing the Izanagi and then Izanami was made to nip that in the bud.