What Could Cause Sudden Fatigue And Eye Floaters At High Altitude?

I live at sea level and am now in Montana, in a city about 3000 fit above sea level. I expected some fatigue but also am experiencing a new crop of floaters and a slight flashing for 15 or 20 minutes last night (I have had opthalmic migraine attacks before) but no diminishing of visiion. Do you think the altitude has anything to do with the proliferation of floaters?