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Iris Nevi or Sectoral Heterochromia?
sfrielings posted:
I have blue/green eyes, and around each pupil there is light brown. In addition, the upper section of my right iris is dark brown. I was not born with this difference in color; it was found around age 2-3. My mother was told it was a birthmark (Iris Nevi), however, in my research of this, I came across Sectoral Heterochromia as a possible cause. To my knowledge, no other family members have this, so I can't imagine it is hereditary. Neither the color around my pupils nor the section in my right eye has changed in color/size over the years. And although the rest of my irises change color from blueish to greenish to grayish depending on what I wear, the brown sections remain the same shade. I am curious as to how to tell which condition it could be considering it sounds like it could be both.
Alan M Kozarsky, MD responded:
Looks like (assuming that the linked photo is your eye) sector heterochromia of the iris. It is good to have a photo like the one submitted so that you can make sure there are no changes in the future.

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