[masraum]

The missus had it occur several years back (early 60s) in conjunction with (likely due to) a vitreous detachment. She ended up having the laser stuff along with a vitrectomy (they took out 70+% of the fluid in the eye) because the air bubble helps hold things in place. She hasn't had any other issues (other than cataracts).

My understanding is that pretty much everyone that lives to a ripe old age will eventually have vitreous detachment. If you're lucky, that's it. If you aren't lucky, then it may cause a tear (they can be caused other ways as well).