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Human traumatic cataract. A quantitative microradiographic and electron microscopic study.

P P Fagerholm, B T Philipson

    Acta Ophthalmologica
    |February 1, 1979
    PubMed
    Summary
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    Traumatic cataracts show swollen lens fibers and reduced dry mass in the subcapsular cortex. These morphological and compositional changes explain cataract opacification after eye injury.

    Area of Science:

    • Ophthalmology
    • Cell Biology
    • Biophysics

    Background:

    • Traumatic cataracts result from eye injuries.
    • Understanding the cellular and structural basis of traumatic cataracts is crucial for developing effective treatments.

    Observation:

    • Six cases of traumatic cataracts at various stages were examined using microradiography and electron microscopy.
    • Swollen lens fibers were observed in the subcapsular cortex of anterior and posterior subcapsular cataracts.
    • Reduced dry mass concentration was detected in the subcapsular cortex, while the inner cortex and nucleus remained unaffected.

    Findings:

    • Traumatic cataracts exhibit significant alterations in lens fiber morphology and dry mass concentration.
    • Opaque cataract membranes, when present, comprised degenerated lens fiber material and regenerated lens epithelial cells.

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  • The observed changes in morphology and dry mass are sufficient to account for the opacification seen in traumatic cataracts.

    • Implications:

    • These findings provide detailed insights into the pathogenesis of traumatic cataracts.
    • Understanding these structural and compositional changes can guide future research in cataract prevention and management.
    • The study highlights the importance of quantitative microradiography and electron microscopy in analyzing ocular pathologies.