Why did Obito advise Itachi to keep his eyes closed?


In _Naruto Shippuden_ episode 359 around 11:47, before the Uchiha massacre,
Itachi meets Obito (camouflaged with a mask as either Tobi or Madara) in the
forest. Obito tells Itachi to keep his eyes closed while killing the Uchiha
people and Itachi agrees saying "I don't have any other choice!".

Why does Obito tell Itachi to keep his eyes closed, and why does Itachi obey?




This is explained plainly after "Madara" tells him to do so.

Because... [!["Madara's
reason"](https://i.stack.imgur.com/WF51S.jpg)](https://i.stack.imgur.com/WF51S.jpg)

"Madara" doesn't want him using his Sharingan to get in the way of his plans.

Itachi agrees reluctantly because... "Madara" guarantees he won't kill Sasuke
if he does.

[!["Madara's
hostage"](https://i.stack.imgur.com/Eb28n.jpg)](https://i.stack.imgur.com/Eb28n.jpg)

There's no hidden meaning behind "Madara's" "request".

