To be frank Serafina, I think it is the Iodine, not the OP. Very rarely do we hear of OPing causing sensitivity, but quite the opposite. Perhaps some feel some sensitivity at the beginning of OP, but not for long.
I got markedly increased sensitivity with the Iodine, but it did eventually go away. I was only taking one Iodoral a day (12.5mg), but I have been doing that on and off for over a month.
So, either it will eventually go away for you too, but I can't say.