Wasei-eigo: odd eye
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.