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Related Experiment Videos

Cytotoxicity of chlorhexidine.

A R Gasset, Y Ishii

    Canadian Journal of Ophthalmology. Journal Canadien D'Ophtalmologie
    |January 1, 1975
    PubMed
    Summary

    Chlorhexidine is a safe ophthalmic preservative for soft contact lenses, even at high concentrations. Its mucous binding capacity limits use, but it remains a top choice for eye solutions.

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    Area of Science:

    • Ophthalmology
    • Microbiology
    • Materials Science

    Background:

    • Soft hydrophilic contact lenses require effective sterilization.
    • Ophthalmic solutions commonly utilize preservatives to maintain sterility.
    • Chlorhexidine is a widely recognized antiseptic agent.

    Purpose of the Study:

    • To evaluate the safety and efficacy of chlorhexidine as a preservative for soft hydrophilic contact lenses.
    • To assess the impact of chlorhexidine on lens endothelium.
    • To determine optimal concentrations for bactericidal effect and safety.

    Main Methods:

    • Light microscopy was employed to examine lens samples.
    • Flat preparations of the endothelium were utilized for detailed analysis.
    • In vitro testing assessed chlorhexidine's interaction with lens materials.

    Main Results:

    • Chlorhexidine demonstrated safety for soft hydrophilic contact lenses, even at elevated concentrations.
    • The preservative exhibited bactericidal effectiveness beyond commercial requirements.
    • A notable mucous binding capacity was observed, potentially affecting lens performance.

    Conclusions:

    • Chlorhexidine is a safe and effective preservative for ophthalmic solutions, including those for soft contact lenses.
    • Its mucous binding property necessitates careful consideration for hydrophilic lens applications.
    • Chlorhexidine is considered a superior preservative option for ophthalmic formulations.

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