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Quantitative lacrimal scintillography

R M Chavis, R A Welham, M N Maisey

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |November 1, 1978
    PubMed
    Summary
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    Quantitative lacrimal scintillography is a sensitive test for tear drainage through the canaliculi. However, it is not useful for evaluating tear passage through the nasolacrimal duct.

    Area of Science:

    • Ophthalmology
    • Anatomy
    • Physiology

    Background:

    • Lacrimal drainage is crucial for maintaining ocular surface health.
    • Current understanding of lacrimal drainage mechanisms requires further refinement.

    Purpose of the Study:

    • To evaluate the utility of quantitative lacrimal scintillography in assessing lacrimal system function.
    • To propose a revised model for lacrimal drainage.

    Main Methods:

    • Quantitative lacrimal scintillography was performed on 100 asymptomatic individuals.
    • Analysis focused on canalicular function and nasolacrimal duct passage.

    Main Results:

    • Quantitative lacrimal scintillography demonstrated high sensitivity and reproducibility for assessing canalicular function.

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  • The technique showed limited applicability in evaluating tear flow through the nasolacrimal duct.

    • Conclusions:

    • Quantitative lacrimal scintillography is a valuable tool for evaluating canalicular patency.
    • Lacrimal drainage is proposed as a bimodal system involving the lacrimal pump and gravity/resistance-dependent flow.