I posted this on Lyme Board too in case any Lymies have experienced this. This is about the 4th time this has happened, the last being about 2 or 3 weeks ago. Then maybe a year between each of the other two events. I "see" an arc, like a "c" in the lower left field of vision. The "c" has a zigzag line and is a flashing, neon type, image. It gradually gets worse, were the "c" grows to a capital "C". At its' peak, my left eye feels numb. The whole thing feels like it takes place in my left eye, but if I close it or put my hand over it, I still see it. Gee, I didn't think to close both eyes to see if I still see it. The whole event lasts about 20 or 30 minutes. As luck would have it, todays event happened as I was one mile from Empire Vision, where I am a patient and was just seen a month or two ago and got my eyes dilated and glasses (first time). They were already overbooked and couldn't see me but Dr. there said I should see an Ophthalmologist or come back for dilation and exam. Does this sound familiar to anyone? Any ideas? I am 50 and this is the first I have worn glasses, was very resistant, but when my arms could grow no more, I had to cave in. Anyway, any thoughts?