Besides the vision problems that are present during an attack, can MM cause permanent vision difficulties? Around the time my symptoms started last summer I had a drastic change in my close up vision. I absolutely can not read anything at all unless I have my glasses on. I'm now wearing bifocal progressive glasses. I've had them less than a year and now my up close vision is getting blurry even with my glasses and it's almost like I have double vision at times. Has MM damaged my vision or is it just a coincidence? I also have the fluttering in my eyes quite a bit even while not having an attack. What does this mean? Thanks for any input.