In seconds of arc, what would passing be on the stereo fly test?

Question

In seconds of arc, what would passing be on the stereo fly test?

Answer 1

Oh, probably about 40. You do not really pass or fail this, it depends on what you see and how you see it. It is not the only binocularity test out there, and does not really define what the issues are if you get a higher number by not seeing something. So, it is kind of a funky question.