My right eye has been acting weird for about 4 months It was like when a contact lens was out of place, but I don't wear contacts anymore but I had cataract surgery about 5 years ago and I thought maybe the lens implant came loose or something, also I was getting these strange zig-zag flashes in my peripheral vision and a floater that was driving me nuts- I kept hitting myself in the head because it seemed like a fruit fly buzzing around my head I slapped myself silly. I finally went to the eye doc yesterday and it turns out I have painless migraines, not all of them are painless though and that's why my eye is acting goofy and I get the headaches. It's quite common I guess, he said medicine or stress or other things they don't know about can cause them. When I get the sparkle things in my eye I should take a couple tylonal. Sometimes you get a migraine and sometimes you don"t. Crazy isn't it, while he was examining my eye he saw the floater I told him to suck it out I guess they don't do that. So I'm really relieved that it's not anything serious,I just have to learn to live with it, so I guess I'll be going around hitting myself in the head for the rest of my life. In 1993 I had tias for 5 months and ignored them I was very close to having a stroke, but this is totally different thank God. He also told me to put eye drops in my eyes 2xdaily, tkis can really dry your eyes out. I hope this helps explain another side-effect that we don't have to panic about but definitely see an eye doctor right away. Billie