persistent photopsia

[msbaldi]

I have chronic momentary light flash in peripheral vision a few times a day which seems to be linked to eye or head movement.  Also coughing or sneezing seems to bring it on.  I have been dilated several times by my cataract surgeon and by retinal specialist who cant find anyt ihing wrong except to say that maybe the pvd is incomplete.  any ideas?

[John C Hagan III, MD, FACS, FAAO]

That would provide an explanation. If the flashes increase or occur without movement, you have new floaters especially in showers of soot like black tiny dots or any loss of peripheral vision see the retina Eye Md or your cataract surgery immediately.