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Toxocariasis: a neglected entity.

R S Clemett, S J Tuft

    The New Zealand Medical Journal
    |July 13, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Toxocara canis infections in dogs can cause human eye disease. This study identified nine human cases in Christchurch, New Zealand, with common ophthalmoscopic findings like macular detachment and granulomas.

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    Area of Science:

    • Veterinary Ophthalmology
    • Human Parasitology
    • Infectious Diseases

    Background:

    • Toxocara canis is a common canine parasite.
    • Human toxocariasis is rarely reported in New Zealand.
    • Ocular toxocariasis can lead to significant vision impairment.

    Purpose of the Study:

    • To describe cases of human toxocariasis caused by Toxocara canis in New Zealand.
    • To document the ophthalmoscopic findings and visual outcomes in affected individuals.

    Main Methods:

    • Retrospective case series of patients seen at Christchurch Hospital over five years.
    • Diagnostic titres for Toxocara canis were confirmed.
    • Ophthalmoscopic examinations were performed on affected eyes.

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    Main Results:

    • Nine patients with diagnostic titres for Toxocara canis were identified.
    • Ophthalmoscopic signs were present in all ten affected eyes.
    • Common lesions included disciform macular detachment and retinal granulomas.
    • Five eyes had vision reduced to 6/60 or worse; five lost 2-4 lines of vision.

    Conclusions:

    • Toxocara canis is an under-recognized cause of human ocular disease in New Zealand.
    • Prompt diagnosis and recognition of ophthalmoscopic signs are crucial.
    • Ocular toxocariasis can result in substantial and permanent vision loss.