University of Iowa Health Care

Ophthalmology and Visual Sciences

EyeRounds Online Atlas of Ophthalmology

Contributor: Jordan M. Graff, MD, University of Iowa

Category: Pediatrics

Iris coloboma

coloboma, Iris

Typical coloboma of the iris, seen here as an inferonasal keyhole defect in the iris in both eyes (right and left eyes shown as if patient is facing the examiner with the nose removed).

Typical colobomas of the iris, as shown here, are caused by failure of the embryonic optic vessicle to close. The ciliary body, choroid, retina, and optic nerve may thus also be involved in patients with iris coloboma.

Iris colobomas can be associated with almost many types of chromosomal abnormalities and syndromes

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Ophthalmic Atlas Images by, The University of Iowa are licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

last updated: 02-08-2008
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