St. Luke's Hospital
Main Number: 314-434-1500 Emergency Dept: 314-205-6990 Patient Billing: 888-924-9200
Find a Physician Payment Options Locations & Directions
Follow us on: facebook twitter Mobile Email Page Email Page Print Page Print Page Increase Font Size Decrease Font Size Font Size
America's 50 Best Hospitals
Meet the Doctor
Spirit of Women
Community Health Needs Assessment
Home > Health Information

Multimedia Encyclopedia

    Print-Friendly
    Bookmarks

    Coloboma of the iris

    Coloboma of the iris is a hole or defect of the iris of the eye. Most colobomas are present since birth (congenital).

    Considerations

    Coloboma of the iris may look like a black, round hole located in or next to the colored part of the eye (iris). It can look like a black notch of different depths at the edge of the pupil. This gives the pupil an irregular shape. It can also appear as a split in the iris from the pupil to the edge of the iris.

    A small coloboma (especially if it is not attached to the pupil) may allow a second image to focus on the back of the eye, causing:

    • Blurred vision
    • Decreased visual acuity
    • Ghost image

    The defect may include the retina, choroid, or optic nerve.

    Colobomas are generally diagnosed at, or shortly after, birth.

    Causes

    Coloboma can occur due to:

    • Eye surgery
    • Inherited conditions
    • Trauma to the eye

    Most cases of coloboma have no known cause and are not related to other abnormalities. A small percentage of people with coloboma have other inherited developmental problems.

    When to Contact a Medical Professional

    Contact your health care provider if:

    • You notice that your child has what appears to be a hole in the iris or an unusual-shaped pupil.
    • Your child's vision becomes blurred or decreased.

    Note: It is appropriate to see an ophthalmologist for vision problems. Your primary health care provider may need to help rule out disorders associated with coloboma of the iris.

    What to Expect at Your Office Visit

    Your health care provider will take a medical history and do an examination.

    The patient is usually an infant, and the family history will be most important.

    The physical examination will include a detailed eye examination, which may involve:

    • Dilated exam
    • MRI imaging of the brain and nerves connecting the eye to the brain

    After seeing your health care provider:

    You may want to add a diagnosis related to a coloboma to your personal medical record.

    References

    Olitsky SE, Hug D, Plummer LS, Stass-Isern M. Abnormalities of pupil and iris. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 614.

    BACK TO TOP

    • Eye

      illustration

    • Cat eye

      illustration

    • Coloboma of the iris

      illustration

      • Eye

        illustration

      • Cat eye

        illustration

      • Coloboma of the iris

        illustration

      Tests for Coloboma of the iris

        Review Date: 10/22/2011

        Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

        The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
        adam.com

        A.D.A.M. content is best viewed in IE9 or above, Fire Fox and chrome browser.


        Back  |  Top
        About Us
        Contact Us
        History
        Mission
        Locations & Directions
        Quality Reports
        Annual Reports
        Honors & Awards
        Community Health Needs
        Assessment

        Newsroom
        Services
        Brain & Spine
        Cancer
        Heart
        Maternity
        Orthopedics
        Pulmonary
        Sleep Medicine
        Urgent Care
        Women's Services
        All Services
        Patients & Visitors
        Locations & Directions
        Find a Physician
        Tour St. Luke's
        Patient & Visitor Information
        Contact Us
        Payment Options
        Financial Assistance
        Send a Card
        Mammogram Appointments
        Health Tools
        My Personal Health
        mystlukes
        Spirit of Women
        Health Information & Tools
        Clinical Trials
        Health Risk Assessments
        Employer Programs -
        Passport to Wellness

        Classes & Events
        Classes & Events
        Spirit of Women
        Donate & Volunteer
        Giving Opportunities
        Volunteer
        Physicians & Employees
        For Physicians
        Remote Access
        Medical Residency Information
        Pharmacy Residency Information
        Physician CPOE Training
        Careers
        Careers
        St. Luke's Hospital - 232 South Woods Mill Road - Chesterfield, MO 63017 Main Number: 314-434-1500 Emergency Dept: 314-205-6990 Patient Billing: 888-924-9200
        Copyright © St. Luke's Hospital Website Terms and Conditions  |  Privacy Policy  |  Patient Notice of Privacy Policies PDF Sitemap St. Luke's Mobile