Heterochromia

(Greek) Portmanteau of “heteros” (different) + “chroma” (colour)

This article is incomplete. I've pre-published it for your information as it is referenced in one of my 2021 World Anvil Summer Camp entries.

This condition is identical real world equivalent (for the time being).
Three variants:

• Central: Two colours in the same iris, typically with the outer ring being one colour and the inner ring another. The inner ring frequently has spikes of varying color that radiate from the pupil. The outer ring eye colour is the "true" eye colour for an individual having central heterochromia. It is most common in people with less melanin in their iris (i.e. blue eyed > brown eyed).
• Complete: Two different coloured eyes.
• Sectoral (Partial):A portion of the iris is coloured differently than the rest. Unlike central heterochromia, sectoral heterochromia appears to be a colour blemish or discontinuity rather than a secondary ring.

Type

Physiological