Hello, a couple of weeks ago I was watching TV in the morning and out of the blue my vision was impaired by what I can only describe as "angled stripy lines in black and yellow" which lasted around 4-5 minutes. I could still see things in the room but the lines passed from one eye to the other before they disappeared. I have not had this problem before or since and wonder if it could be something serious. I am 70 years old (June this year) and have been wearing progressive glasses recently for the past 10 years. I had an eye examination last month which was a two year check up and probably will need new glasses anyway. Hope you can explain this unusual happening. Regards, Lois.