Hello Welcome to Health care magic I reviewed your history. It seems from the history that you are having migraines with visual aura. Visual aura is a common part of prodromal phase of migraines and occur in the form of flashes of light, flaoters, zig zag lines, transient loss of vision, blurring of vision... These can be treated by the treatment of migraine. Usually the prophylactic drugs like flunarizine or beta blockers are effective in treating migraine and aura of migraine. Hence I advice you to consult your doctor for examination and treatment accordingly. Thank you With regards