Aniridia, a hereditary disorder characterized by the absence or partial absence of the iris, can also be referred to as iris hypoplasia, congenital aniridia, or irideremia. Other synonyms include iris aplasia, atresia of the iris, and coloboma iridis. However, it is important to note that these synonyms may not be used interchangeably in medical literature as they may have slightly different meanings or implications. The condition can cause a range of visual impairments, including sensitivity to light, nystagmus, and reduced visual acuity. Treatment options include corrective lenses, medication, and surgery in severe cases.