Actuallly, I see "crooked" with one eye, too - but it's for a different reason that you do.
I had a "hole" -don't remember what the first part of the description was - and it was surgically repaired - and where the "seam" is - lines are crooked.
When I am "seeing" with both eyes, my brain "repairs" the crookedness.
I have problems with the vision tests - I have to turn my head to find a "good spot" to see with my left eye.