

[![enter image description
here](https://i.stack.imgur.com/bwSNO.png)](https://i.stack.imgur.com/bwSNO.png)

I've been thinking about his Mangekyo and how it seems to have had no impact
on his eye sight and how he could have escaped the effects. After much thought
on the topic I think I might have the solution and am wondering if this is a
valid theory or not. My theory is you need both Mangekyo to hurt your vision.
Since he had only 1 eye this effectively allows him to use part of its power
for no effect compared to people like Itachi and Sasuke who do have both and
had issues with this. Basically if I didn't make it clear enough with only 1
eye he couldn't get Susanoo or the other great abilities but also didn't have
the downside of losing his sight. So do you think this is a valid theory? I
know its unprovable either way just trying to see if I'm the only one who
thinks this is a possible solution.


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2017-09-01T21:08:43.377
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naruto
How does Obito not lose his eyesight after excessive use of the mangekyo?


I could think of two things:

  * He was the owner of that Sharingan. He had more compatibility with it. So he can use it more number of times than Kakashi.

  * He had Hashirama's cells.


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2018-04-02T15:18:54.530
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Considering he have hundreds of spare _Sharingan_ and half body of white
zetsu. It is quite easy for him to maintain Mangekyu Sharingan (can never
actually use eternal mangekyu).

We can see that in the scene when he transplanted Itachi's eyes to Sasuke.

[![enter image description
here](https://i.stack.imgur.com/uz3yN.png)](https://i.stack.imgur.com/uz3yN.png)

[![enter image description
here](https://i.stack.imgur.com/51vkD.png)](https://i.stack.imgur.com/51vkD.png)


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it is due to Hashirama's cells, plus I have always been under the believe that
any Uchiha and Senju/Uzumaki pairing would negate any of the physical side
effects of the sharingan due to being of the both the physical and spiritual
sides of the sage.

it could also have to do with the fact that with one eye missing he can not
use susanoo which might have been damaging and intense enough to overwhelm the
healing abilities of Hashirama's cells.


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2018-06-03T14:13:01.053
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You've all got the wrong idea. It is because he had half of white zetsu's body
which was developed using Hashirama's cells. The senju had extremely powerful
healing body which could instantly heal any wound. The lost of eyesight occurs
due to regular use of the mangekyo sharingan because you don't get the time to
heal that injuries done by it in thar sorry period of time, however for Obito
because of Hashirama's cells that damage was healed instantly.


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To fully answer the question, I'm gonna go back to the Third Great Ninja War,
where Obito was a kid.

The Village Hidden in the Leaves is currently at war with the Stone Village,
and Team Minato is on the battlefield. Obito and Kakashi are facing a Stone
Ninja with camouflage abilities. He uses them and slashes Kakashi's eyes in
the process. This leaves Obito crying and awakens his Sharingan. When the
invisible Stone Ninja is coming up, Obito uses his Sharingan to track him
down, then finishes him with a kunai.

**This is how Obito awakened his Base Sharingan. (2 tomoe)**

The squad of Stone Ninjas have captured Rin Nohara, Obito and Kakashi's third
squadmate. After finishing the Stone Ninja, they go to rescue her. They fight
with the Stone Ninja, and after, he leaves the area and uses a jutsu to make
the cave they fought in collapse. When Rin, Kakashi, and Obito are running
away to exit, Kakashi gets hit by a falling rock and falls. Obito then goes
back to save him, and gets crushed by a falling boulder. His right side is
nearly completely crushed. He gives Kakashi his left eye's Sharingan as a gift
for becoming jonin. The remaining members then run for the exit.

By chance, the place Obito was crushed was near an underground passageway that
Madara Uchiha created, and Madara then took and healed Obito to use him as his
pawn to revive him. While Madara attends to Obito, he injects almost his
entire right side with Hashirama Senju's cells, and White Zetsu also attaches
himself to Obito's right side.

One of White Zetsu's clones alerts Obito that Rin and Kakashi are in danger
and surrounded by Rain Ninja that seemed to be Jonin or Black Ops. Obito then
destroys the exit to Madara's lair and runs to aid Rin and Kakashi. By the
time he gets there, he sees that Kakashi has stabbed Rin Nohara right in the
heart with Chidori.

**This awakens him a 3 tomoe Sharingan, then a Mangekyou Sharingan.**

He grows older and masters almost every aspect of his Mangekyou Sharingan,
excluding Susano'o. He couldn't use Susano'o because one must achieve a
Mangekyou Sharingan in **BOTH EYES** to use it. By the time he awakened his
MS, his left eye was in Kakashi and thus couldn't use Susano'o.

**Since Obito was injected with tons of Hashirama cells when Madara saved him,
they gave him Wood Style, and a Mangekyou Sharingan that never went to
blindness.**

**NOTE: Rin Nohara willingly let Kakashi stab her with Chidori, it was no
means of betrayal. She knew that she became Three Tails Jinchuriki and let
herself die so she wouldn't rampage in the Leaf Village.**

After the Uchiha Annihilation, Obito took the Sharingan of almost every Uchiha
Member. So even if he went towards blindness, he could always restock on his
hundreds of spares. Not to mention he has a spare Sharingan behind his mask.


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