Hello looking for advice on my babys blue eyes that have a white ring aroung the pupil

Hi there, pretty new to posting on this site. It is very helpful for so many issues.
I will give a short background...I have a baby girl who turned 5 months old. I strictly breastfed until a few weeks ago when I gave her green beans and bananas. But I noticed around her 3 month mark that her beautiful blue eyes were very light almost white in a ring around her pupil. could this be my Iodine intake (not on Iodine protocol just started to paint my feet with it as I know there are benefits in breastfeeding)putting toxins into her body? I am worried that it is something serious and would like to rememdy it. Thankyou for your response Tweet