I've been suffering more and more of these recently. They just suddenly come on and render me inoperative for anything between 5 and 30 minutes usually. No headache at all, just highly restricted vision with moving shimmering brightly coloured jagged shapes and a fuzzy 'ed.
More annoying than anything else, and a good excuse for a little lie down.
but I appreciate it needs sorting.
Trouble is that it comes on so quickly, that taking anything wouldn't have time to counteract it. Had an attack while havin' me cornflakes this morning. Ended up scooping the keys off the keyboard.
Anyone else suffer, and recommendations please, cus it's startin' to get RIGHT on my tits now.