Iris Coloboma

Iris coloboma

Coloboma of the iris arises from failed or incomplete closure of the embryonic fissure during development. This process occurs on day 33 of gestation and allows for pressurization of the globe.

The physical exam may reveal obvious defects in the iris and are typically seen at or soon after birth.

There is no cure for a coloboma, and treatment varies depending on the type. People with an iris coloboma may wear coloured contact lenses to make the iris appear round. Surgery can also correct the appearance of the iris.


(OMIM 120200)

Last modified
2 January 2021

Q13.0 Coloboma of iris

Congenital malformations of anterior segment of eye

Rare Condition

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General Medical Guideline