Full Question:

Can anyone tell me what is going on with the blind spots that have remained after I had a visual migraine over a year ago, June 2007? I had no headache afterwards - but these small spots to left of my visual field have remained. 

If reading a word and put my focus on one letter in the word, I don't see the preceding two-three letters, but if reading a long word, any letters before these spots I'm again be able to see.

It seems the outline of the crescent that appears during the...