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Primary cysts of the iris

J A Shields

    Transactions of the American Ophthalmological Society
    |January 1, 1981
    PubMed
    Summary

    Primary iris cysts, often epithelial, are typically stationary and rarely cause vision loss, contrary to some beliefs. This study proposes a new classification for these benign iris lesions.

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    Area of Science:

    • Ophthalmology
    • Pathology

    Background:

    • Primary iris cysts are lesions within the iris.
    • Current understanding of their natural course and potential complications is debated.

    Purpose of the Study:

    • To classify primary iris cysts based on clinical experience.
    • To evaluate the natural course and complications of primary iris cysts.
    • To compare primary and secondary iris cysts.

    Main Methods:

    • Clinical evaluation and follow-up of 62 patients with primary iris cysts.
    • Development of a cyst classification system.
    • Observation of lesion progression and visual outcomes.

    Main Results:

    • A classification system dividing primary iris cysts into epithelial and stromal types is proposed.
    • Epithelial cysts arise from the iris pigment epithelium, while stromal cysts originate from ectopic epithelium.
    • The majority of primary iris cysts, especially epithelial ones, are stationary and do not cause significant visual complications.
    • Secondary iris cysts, in contrast, frequently enlarge and lead to complications like inflammation and glaucoma.

    Conclusions:

    • Primary iris cysts are generally benign and stationary, contradicting some established beliefs.
    • A clear distinction exists between the natural history of primary and secondary iris cysts.
    • The proposed classification aids in understanding and managing iris cysts.

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