Coloboma of iris

Coloboma of iris is a medical condition characterized by a hole or gap in the iris, the colored part of the eye. This condition is a type of ocular coloboma, which refers to any gap in the structures of the eye. Coloboma of iris is a congenital condition, meaning it is present from birth.

Causes

Coloboma of iris is caused by incomplete development of the eye during pregnancy. The exact cause is unknown, but it is thought to be related to genetic factors. Some cases are associated with chromosomal abnormalities or genetic syndromes, such as CHARGE syndrome.

Symptoms

The primary symptom of coloboma of iris is a visible hole or gap in the iris. This can give the iris an unusual shape, often described as "keyhole" or "cat-eye." Other symptoms can include vision problems, such as blurred vision, reduced visual acuity, or photophobia (sensitivity to light).

Diagnosis

Diagnosis of coloboma of iris is typically made through a comprehensive eye examination. This can include visual acuity testing, slit lamp examination, and dilated eye examination. In some cases, genetic testing may be recommended to identify any associated genetic syndromes.

Treatment

There is no cure for coloboma of iris, but treatment can help manage symptoms and prevent complications. This can include wearing sunglasses to reduce light sensitivity, using corrective lenses to improve visual acuity, or undergoing surgery to improve the appearance of the iris.

Prognosis

The prognosis for individuals with coloboma of iris varies depending on the severity of the condition and any associated health problems. With appropriate management, most individuals can lead normal lives.

See also

• Ocular coloboma
• Iris (eye)
• CHARGE syndrome

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