Quote Originally Posted by Darky
Though Kakakashi still has one normal eye. So he might go blind with his sharingan but that really wouldn't affect him that much in normal life. This means Madara should be long blind now though. Maybe that's why Sasuke is being measured actually, to take his eyes when he's ready
But if that were the case, then why wipe out the entire Uchiha clan except for Sasuke? If their intentions were to take Sasuke's sharingan, then they will be out of sharingan eyes after that. They have eliminated their source of "organ donors".

I don't believe the Uchiha's were wiped-out to test any "capacity", not if Madara and Itachi were working together. It's more likely they fear the Uchiha's and wiping them out was to preemptively eliminate any future threat to their true plans.

They must have some sinister plot in store for Sasuke, hopefully we'll find out what it is soon.