Well, the title basically asks the question, is Sasuke going to go blind soon?
I mean, the mangekyou slowly deteriorates your vision from the time you first used it. Itachi died at 21 and he could barely see Sasuke because of the mangekyou destroying his vision and Sasuke has used the Mangekyou quite a few times.
So what do you think? Has Sasuke vision already been affected? Will it be anytime soon? I'm not sure at all, that's why I posted this. I mean, he can't steal another Uchiha's eyes now... or wasn't he planning on taking Itachi's to get EMS? I forget.