Apologies about the confusion! Binocular vision, meaning using both eyes. Much of the course is focused on this, with patching coming later just to small amounts.
Most improvement happens by using the eyes (together) as intended by the system.
Very nice centimeters.
Active focus, main thing to be playful. Do things like trying to read license plates at a distance. Don’t overdo it. Kids usually figure out active focus easily, may not even realize they have it already. Not forcing it is key. 🙂