I am on suboxone and amitriptyline for fibromyalgia. For about two weeks I have had very bright lights flash out of the corners of both eyes, sort of like a camera flash going off, but with a trail (sort of a spastic shooting star?). Last night I was sitting outside on the patio with my brother and 'saw' a firefly go by my right side. Bright yellow light. I asked him if he saw it, but he hadn't. About a minute later I saw another bright yellow light go by my left side. When he hadn't seen that one either, I figured it was the same thing I've been seeing only yellow this time. It has been going on for a while, numerous times a day. Is this something I should be concerned about?!