I am seeing very brief dim lighting type flash in right eye when i move my eyes left right near white wall or background. I have floaters for more than 2 years now but this flashes things is new. Its not always but only seen when moving eyes and only in right eye. Also, when sitting below bulb or in not that bright environment. Could this be serious or its just my existing floaters being changing? I had eye exam 2 weeks back and already going through treatment for Papilledema. Could this be caused by Papilledema too?