2 doctors weighed in:

How to get heterochromia? I'm aware of physical things that can do it, but what exactly?

2 doctors weighed in
Dr. Bruce Saran
Ophthalmology
1 doctor agrees

In brief: Multiple

Iris lighter: uveitis or iritis, congenital horner's syndrome, fuchs heterochromic iridocyclitis, and rarely metastatic tumor, jxg and waarednberburg syndrome.
Iris darker: iris nevus, diffuse iris nevus, ocular melanocytosis, hemosiderosis, retained intraocular foreign body, siderosis, ocular malignant melanoma; rarely leukemia, retinoblastoma, lymphoma and some fuchs heterochromic iridocyclitis.

In brief: Multiple

Iris lighter: uveitis or iritis, congenital horner's syndrome, fuchs heterochromic iridocyclitis, and rarely metastatic tumor, jxg and waarednberburg syndrome.
Iris darker: iris nevus, diffuse iris nevus, ocular melanocytosis, hemosiderosis, retained intraocular foreign body, siderosis, ocular malignant melanoma; rarely leukemia, retinoblastoma, lymphoma and some fuchs heterochromic iridocyclitis.
Dr. Bruce Saran
Dr. Bruce Saran
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