Fachbereich Veterinärmedizin



    Ocular findings in healthy chinchillidae (2009)

    Mauler, D.
    Lübke-Becker, A. (WE 7)
    Eule, C. (WE 20)
    Annual Meeting of the European College of Veterinary Ophthalmologists
    Dänemark, 03. – 07.06.2009
    Veterinary Ophthalmology; 12(6, Abstract Nr. 31) — S. 387
    ISSN: 1463-5216
    DOI: 10.1111/j.1463-5224.2009.00712.x
    Institut für Mikrobiologie und Tierseuchen

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    Abstract / Zusammenfassung

    Purpose: To establish reference values for Schirmer’s tear test I (STT), phenol red thread tear test
    (PRT) and IOP, and to determine corneal sensitivity, the ocular surface flora and the occurrence of
    ocular changes in healthy chinchillas. Methods: Eighty healthy chinchillas of different ages (6 weeks
    to 11 years, mean age: 3.8 years) and genders were examined. Bacterial culturing and sensitivity testing
    was induced. Tear production was obtained using the STT I (Essex Pharma, Germany) and the
    PRT tear test (Menicon Pharma, France). Corneal sensitivity was determined using a Cochet-Bonnet
    esthesiometer (Luneau, France). A complete ophthalmic exam was performed using slit-lamp biomicroscopy,
    direct and indirect ophthalmoscopy. IOP was assessed using the TonoVet (Tiolat/Icare,
    Finland). Results: Themean value of STTwas 0.5 ± 0.65 mm (wetting/min) (median 0 mm).The
    mean value of PRTtest was 15.5 ± 3.21mm (wetting/15 s) (median 15mm).Themean corneal sensitivity
    value was 31 ± 5.99 mm (median 30 mm). The mean IOP was 3.24 ± 1.76 mmHg (median:
    3 mmHg). Ocular findings included: e.g. epiphora (16/80), caruncle trichiasis (40/80), cataracts (11/
    80 bilateral, 7/80 unilaterally), prominent lens sutures (15/80), nucleosclerosis (8/80, animals older 5
    years) and glaucoma (1/80). The predominating bacteria involved Staphylococcus xylosus and equorum,
    Aerococcus viridans and Corynebacterium. All bacteria found were susceptible to Gentamicin.
    Conclusion: Because of the small amount of tears, the PRT test is recommended for tear
    measurements in chinchillas. Cataracts seem to be a frequent coincidental finding in chinchillidae.