What are the biggest visual differences after vision therapy?

"...My left eye has come alive in that, like I'll be in my everyday life and I'll notice that I can see people on my left... I can see what's going on, and it's not just like a reflex. It's not like, that I have to work to turn my left eye, but if I'm in class, I can see everything around me. I can see both my hands right now. I know this sounds really stupid, but... this hand I can always see... I can always see the right... but the fact that I can see my left hand and my right hand at the same time? That's never happened to me!"