In most cases of congenital iris heterochromia, the condition does not affect the patient’s health and does not require treatment if it is not accompanied by other eye and body complaints. For patients with acquired iris heterochromia, the condition is caused by a disease after birth, which can lead to iris atrophy, blurred vision, visual impairment, eye congestion, lens clouding, and other symptoms, so it is important to seek prompt medical attention.