As I posted recently in the Vision Issue thread I'm on a bit of an odyssey to find out what caused my temporary vision loss a few weeks ago. Latest is the Cardiologist says BP good, Cholesterol is good, Caratid artery ultrasound good. Wants to send me to do a bubble test and a T. E. E. At this time, he suspects a possible PFO or possibly just thickened blood that could cause debris/plaque to get stuck in the artery behind the eye. Very overwhelmed with worry on this one. I know what it isn't but I still don't know what it is. I really don't like the idea of being on blood thinners at all. But there is some reason why the angiogram of the eye showed the dye taking twice as long to profuse through the eye. anybody out there with any thoughts or similar experiences?