Heterochromia
Heterochromia is a condition defined by the presence of different colors in the iris of the eye. There are following types of Heterochromia: Complete heterochromia: When both the iris are of different colors. Partial heterochromia: Only a part of iris is different than the rest. Central heterochromia: When the central portion or ring of the eye is of different color than the rest. It can be due to congenital reason or acquired causes. Congenital causes includes: * Piebaldism * Hirschsprung disease * Bloch-Sulzberger syndrome * Von Recklinghausen disease * Bourneville disease * Waardenburg syndrome * Sturge-Weber syndrome * Parry-Romberg syndrome * Horner’s syndrome Acquired causes includes: * Glaucoma * Medications * Injury to eye * Eye cancer * Neuroblastoma Picture credit: http://www.seocularists.com/2018/12/12/heterochromia-a-beautiful-anomaly/