I had read about your experience before posting. It seems we have some differences. Mine was in an artery and yours was in a vein, right? In what reading I have done it seems veins recover a bit more than arterial retinal occlusions. I did have that test done and was an 11.1 where normal is <11.4. The guess is the problem was either from plaque or a clot, but the carotid arteries didn't show problems on the ultrasound and the echocardiogram came back ok(as did the bubble test).