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Related Experiment Videos

Chalcosis in the human eye. A clinicopathologic study.

N A Rao, M O Tso, A R Rosenthal

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |August 1, 1976
    PubMed
    Summary

    Intraocular copper foreign bodies were analyzed to understand their impact on eye tissues. Copper composition influences deposit patterns, but retinal structures remain preserved even after long-term retention.

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    Area of Science:

    • Ophthalmology
    • Materials Science
    • Pathology

    Background:

    • Intraocular foreign bodies (IOFBs) can cause significant ocular damage.
    • Copper IOFBs present unique challenges due to potential toxicity and deposition.
    • Understanding copper IOFB composition is crucial for predicting clinical outcomes.

    Purpose of the Study:

    • To investigate the clinicopathologic effects of intraocular copper foreign bodies.
    • To correlate the chemical composition of copper IOFBs with their deposition patterns and ocular pathology.
    • To assess the long-term impact of copper IOFBs on retinal structure preservation.

    Main Methods:

    • Clinicopathologic examination of eight human eyes with intraocular copper foreign bodies.
    • Analysis of foreign body chemical composition using atomic-absorption spectrophotometry and x-ray diffraction.
    • Histochemical staining (rhodanine, rubeanic acid, alizarin blue) to detect copper deposits.
    • Correlation of copper deposition with clinical findings and pathological changes.

    Main Results:

    • Copper deposits were identified in Descemet membrane, vitreous, internal limiting membrane, and fibrous capsules.
    • Eyes with >85% copper foreign bodies showed more disseminated copper deposits.
    • Eyes with <85% copper alloy foreign bodies exhibited more localized copper deposits.
    • Retinal structures were well-preserved, irrespective of the duration of foreign body retention (up to 22 years).

    Conclusions:

    • The chemical composition of intraocular copper foreign bodies significantly influences the pattern of copper deposition within ocular tissues.
    • Despite potential for widespread deposition, retinal structures demonstrate remarkable resilience to long-term intraocular copper foreign body presence.
    • Clinicopathologic correlation aids in understanding the behavior and impact of metallic IOFBs.

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