Refers to a pair of eyes with different colored irises. Heterochromia comes from the Greek ἕτερος (heteros, different) and χρῶμα (chroma, color).
This tag usually refers to complete heterochromia iridum (both irises have a different coloration). For subjects with partial heterochromia (different colors are present within the iris of a single eye), use multicolored eyes.
Generally, include any eye-color tags for each instance. Don't use the multicolored eyes tag unless one or both individual eyes have more than one color.
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