Yes. Occasional bouts since my 30's, so getting on for 50 years now. The first one scared me to death! Very few these days, and I believe that the main trigger for me is caffeine, and bright, fluorescent lighting, especially when combined. Mine are purely visual disturbances, which begin with a sparkling light at the periphery of my vision, growing into an ever increasing, luminous zig-zag which spreads across my visual field and produces a large, blind spot. It then retreats, as normal vision is gradually restored. I can almost set my clock as to how long these episodes last, i.e. between 35 and 45 minutes. Fortunately, they are now a very rare occurrence.