Imagine that you lived in a house with two windows. If you wanted to see the outside world, what would you do? You would approach one of the windows, and look out through it.
You could choose to look out of the right window or the left window, but never both at the same time. How would it be possible to look out of two windows at the same time, anyway? Magic? Astral projection? Cutting yourself down the middle? It's impossible!
That's what having strabismus is like. Living in a house with two windows, and only being able to look through one window at a time. Luckily, I'm finding out that it is indeed possible to look through two windows. Magic can happen!