My doctors have given me an sos that the moment i see lightening in my vision i am to rush back to him, due to the liquefaction in my vitreous and black thready floaters. They developed just a few months back and anything i did not notice before gives me a huge scare that it might be lightening flash i am seeing. But what exactly is it, suddenly a lot of light in the vision field like when lightening cracks or the thin white lines in the sky??? Also is seeing white afterimage of anything narrow and wire like normal for someone like me???