I have been seeing haloes, starbusts and glare and sudden flashes and black dots for the past 8 months. In the beginning i was so worried because my vision just changed gradually, ive been to 2 eye hospitals and ave done loads of scsns they still dont know whats wrong they cant see nothing with my eyes at all, the symptoms i have are non stop daya and night but gets worse st night every light in vision becomes haloes with s starbust and glare of anything and everything, i also have had a mmri scan that showed clear and also a lumpur pincture that was clear too and nerve test was clear too. i done saw antoher nerologost 3 months from now saying this is all mirgrane acute mirgrane because i ave no pain in my head, since 3 months now been taking propomolol tabs for mirgrane from 20mgs to 6 tabbs a day and i still dont see no difference at all in my vision. today i remebered something i have had a gastric band done in june 2011 ans since ten till now i have lost 32kgs, since i had the band done i was nearly vomitting 3 - 4 times as day guessing the bandwas too tight. now am thinking maybe it was to do with that hard coughing and vomitting which caused pain in head while vomittinng. i still dont know whats wrong with my vision as everything is coming out clear, can you please let me know if you know what this might be, any suggesttions? it is also causing me anxiet and depression with this visual disturbannces wich is in the way, thank you.