(pinging u/xteriic)
I am late to the party, but I am bringing the good news!
They do exist in Europe! Ask your eye doctor to find contacts for you or reach to your local Aniridia group in your country to see if they have contacts to hospitals with surgeons who perform these, finding a hospital or a doctor who performs these are just as rare as Aniridia is, but they do exist! (
$1)
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My mother had iris transplant performed by a Estonian eye surgeon in Finland 12 years ago.