I get these, too--can lose most of my vision--not that it's "blacked out" but just "gone". not black, but gone. It can effect one side of the vision or the middle (that's really funny, to see your husband but he has no head LOL!). I do not have pain with mine.
I do have spots in my vision that do not ever go away. There are now 3 of them, in a triangle, in my right eye. The opthamologist says he can see them. He sent me to a retinal specialist, but there isn't any cause for alarm yet--but they did tell me to watch out for signs of retinal detachment, because that's the next step. It seems that the vitreous gel of the right eye has liquified and that's a "problem" LOL...
Leave it to me to be the "one" with the problem.. haha