Definition of "coloboma" []

• An anomaly of the eye, usually a developmental defect, that often results in some loss of vision. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Sometimes the choroidal fissure persists, and when this occurs the choroid and iris in the region of the fissure remain undeveloped, giving rise to the condition known as coloboma of the choroid or iris."
• "Again, the iris may be the seat of a malformation, termed coloboma, which consists in a deficiency or cleft, clearly due in a great number of cases to an arrest in development."
• "Loper, because of a hereditary disease, coloboma, was born blind in her right eye."