This morning while travelling to work by tram I had another visual migraine. It was a little worse than last time, not only did everything I focussed on appear to shimmer, but things went a bit grey at my peripheral vision. I had a headache as well although it was very mild (not the typical migraine headache).
It was convenient that the vision problems almost exactly matched the time of my tram journey so that it didn’t cause me to waste much time. One visual migraine every three months is something that won’t inconvenience me much. I just hope that I don’t get other migraine symptoms in future.