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Human ocular mucus. Scanning electron microscopic study

J V Greiner, D R Korb, H I Covington

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |October 1, 1982
    PubMed
    Summary
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    Scanning electron microscopy revealed mucus on the human conjunctival surface appears as strands, sheets, and granules in both normal subjects and contact lens wearers. No qualitative differences were observed between the groups.

    Area of Science:

    • Ophthalmology
    • Biomaterials Science

    Background:

    • The human conjunctival surface produces mucus, a critical component of the tear film.
    • Contact lens wear can alter the ocular surface environment and mucus characteristics.

    Purpose of the Study:

    • To investigate the morphology of conjunctival mucus in normal subjects and contact lens wearers using scanning electron microscopy (SEM).
    • To compare the mucus structures observed via SEM with previous findings from light microscopy and biomicroscopy.

    Main Methods:

    • Biopsy specimens of the human conjunctival epithelial surface and associated mucus were obtained from 20 normal subjects and contact lens wearers with excess mucus.
    • Scanning electron microscopy was employed to examine the morphologic features of the mucus.

    Main Results:

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    • Mucus was observed in three distinct morphologic forms: strands, sheets, and granules.
    • All three mucus forms were present in samples from both normal subjects and contact lens wearers.
    • No qualitative differences in mucus morphology were detected between the two groups.

    Conclusions:

    • SEM visualization of conjunctival mucus reveals consistent morphologic forms (strands, sheets, granules) irrespective of subject status (normal vs. contact lens wearer).
    • SEM findings corroborate previous observations made with light microscopy and biomicroscopy, suggesting SEM preparation minimally alters in situ mucus characteristics.