Aniridia is a genetic eye condition that is present at birth (congenital) and is almost always bilateral. Aniridia literally means “without iris.” In most cases this is the most visible sign of the condition. However, aniridia is caused when the gene responiable for eye development – the PAX6 gene – does not function correctly. This causes the eye to stop developing too early and when the baby is born most of the eye is underdeveloped to some degree.
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