Board Thread:Versus Debates/@comment-45235418-20200316185119/@comment-32685487-20200331171755

Kirin is lightning, it isn't an object and it struck at 1/1000th of a second. So either Itachi did track it when almost blind(which is extremely impressive on its own) or he didn't track it and that's more likely considering its speed and the fact he was almost blind which is still super impressive.