If he has something like inflammation (uveitis
) and minor bleeding (hyphema
) in his eye he should not have permanent loss of vision.
But, if it is as you have said and his lens is broken (and has gone untreated since Friday), he has bleeding in the back of his eye (vitreous
hemorrhage) and his eye is leaking (open globe) then I would have to honestly say he is in deep trouble as far as his eye is concerned.
Once his eye is closed, and as long as his treatment doesn't involve the placement of a gas bubble in his eye (this would be done by a retina surgeon) than he is safe to fly.
It sounds to me that the sooner he gets treatment from an eye surgeon (Ophthalmologist) the better he is going to be. If this requires that he fly out of the country, so be it.
He is fortunate to have good friends like you :-)
Let me know if you have any further questions.
It's safe for you to press the positive feedback button now if you so desire. And, never fear, even after you press that button I don't go up in a puff of smoke -- I'll still be right here to continue helping you :-)