There are stats out on getting the eye disease after the RAI. There are stats out on getting the eye disease if you are a smoker. I had the RAI and am a smoker. Yep, I got the eye disease almost 2 years after I got the RAI. My eyes were fine before that except for the occassional twitching. I bet your husband is right, that the twitching is from being tired!
My sister has GD too. She got it in her late 20’s and I got in when I was 39. She had the RAI and is a smoker. I wish she was not a smoker so then I could blame getting the eye disease on heredity! What I mean is that I feel a little guilty that I possibly made myself sicker because I smoke. But then again I know this guy that has GD, he smokes and he his eyes are fine and he had the RAI.
The decission as to what do is up to you. I can find the pages off the net that show the stats if you want them.