Cat With Heterochromia

Abnormal iris lighter
- Simple heterochromia – a rare condition characterized by the absence of other ocular or systemic problems. The lighter eye is typically regarded as the affected eye as it usually shows iris hypoplasia. It may affect an iris completely or only partially.
- Congenital Horner's syndrome – sometimes inherited, although usually acquired
- Waardenburg's syndrome – a syndrome in which heterochromia presents as a bilateral iris hypochromia in some cases. A Japanese review of 11 albino children with the disorder found that all had sectoral/partial heterochromia.