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Pseudopterygium from exposure to selenium dioxide

R E Wesley, J W Collins

    Annals of Ophthalmology
    |June 1, 1982
    PubMed
    Summary
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    Selenium dioxide gas exposure can cause pseudopterygium and symblepharon, a rare cicatricial condition. This case highlights the persistent nature of this eye condition, even after multiple surgical interventions.

    Area of Science:

    • Ophthalmology
    • Toxicology

    Background:

    • Pseudopterygium is a cicatricial condition affecting the eye.
    • Previous reports linked seleniferous acid exposure to pseudopterygium.

    Observation:

    • A patient developed pseudopterygium and symblepharon following exposure to selenium dioxide gas.
    • The condition presented with eccentric location and eyelid scarring, differentiating it from typical pterygium.

    Findings:

    • The pseudopterygium recurred despite 11 surgical attempts.
    • Full-thickness mucous membrane grafts were utilized in an attempt to separate the eyelid from the globe.

    Implications:

    • This case underscores the potential ocular toxicity of selenium dioxide gas.
    • Understanding the distinct features of chemically induced pseudopterygium is crucial for diagnosis and management.

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