Hi Marjorie...Oh dear, the black and white thing sounds scary...such strange things happen with this miserable illness. I don't have the black and white problem but very occasionally I have an 'ocular migraine,' in which my vision becomes blurred and I see what looks like brilliantly colored lightning which blocks the 'view' for about 20 minutes. It is beautiful but the first time it happened I just about expired from fear. It happened once when I was driving and I had to pull over and wait it out. My eye doctor knew immediately what it was. He gets it too. Check it out with your doctor!! Take care...Liz