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Even if they weren't losing sight yet having EMS would of made them both way more powerful and Izuna probably would have beat Tobirama
Have them pluck one eye and insert one at a time...It would be impossible...
Both of them wouldn't be able to see if you think about it.
Madara gives Izuna his eyes. They both won't be able to see.
no it's not that lolMadara wasn't a intelligent guy at that time.