Coloboma of iris
Coloboma of Iris
Coloboma of Iris (pronounced: kuh-loh-boh-muh of eye-ris) is a medical condition that affects the eye. It is a congenital defect, meaning it is present from birth, and is characterized by a gap or hole in the structures of the eye, most commonly the iris.
Etymology
The term "coloboma" is derived from the Greek word "koloboma," meaning "curtailed" or "mutilated." This refers to the missing or incomplete development of the eye structures.
Definition
A coloboma of the iris is a condition where part of the iris, the colored part of the eye, is missing. This can occur in one or both eyes and can affect vision depending on the size and location of the coloboma. It is a type of ocular coloboma, which can affect different parts of the eye.
Symptoms
Symptoms of coloboma of the iris can vary greatly depending on the size and location of the coloboma. Some individuals may not experience any symptoms, while others may have significant vision impairment. Common symptoms can include:
- Decreased visual acuity
- Light sensitivity
- Distorted pupil shape
Causes
Coloboma of the iris is caused by abnormal development of the eye during pregnancy. It occurs when a gap, known as the choroid fissure, fails to close up completely before a child is born. The exact cause of this abnormal development is not fully understood, but it is believed to be influenced by both genetic and environmental factors.
Treatment
There is currently no cure for coloboma of the iris. Treatment focuses on managing symptoms and preventing complications. This can include the use of corrective lenses or sunglasses to manage light sensitivity, and regular eye exams to monitor vision and eye health.
Related Terms
- Ocular coloboma: A broader term for colobomas that can affect different parts of the eye.
- Choroid fissure: The gap in the eye structures that fails to close in cases of coloboma.
- Iris: The colored part of the eye, which can be affected by coloboma.
External links
- Medical encyclopedia article on Coloboma of iris
- Wikipedia's article - Coloboma of iris
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