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Related Experiment Videos

The 'blue eye' phenomenon.

R Curtis, K C Barnett

    The Veterinary Record
    |April 9, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Canine adenovirus type 1 (CA-1) causes blue eye in dogs through immune complex reactions, leading to corneal edema. Newer vaccines use CAV-2 to prevent these ocular issues.

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    Area of Science:

    • Veterinary Ophthalmology
    • Immunology
    • Virology

    Background:

    • Corneal edema and uveitis, known as 'blue eye', can result from canine adenovirus type 1 (CA-1) infection or vaccination.
    • This condition is understood as a type III hypersensitivity reaction involving immune complexes formed by viral release from corneal endothelial cells.
    • Some cases do not resolve, and certain breeds like Afghan hounds show increased susceptibility.

    Purpose of the Study:

    • To explain the immunopathogenesis of kerato-uveitis caused by CA-1.
    • To highlight the role of immune complexes in corneal endothelial damage and edema.
    • To discuss the development of safer vaccines.

    Main Methods:

    • Review of existing literature on canine adenovirus type 1 and ocular disease.

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  • Analysis of the hypersensitivity mechanisms involved in kerato-uveitis.
  • Examination of vaccine development strategies.

    • Main Results:

    • CA-1 infection or vaccination triggers immune complex formation, leading to corneal endothelial damage and edema.
    • The condition is a manifestation of type III hypersensitivity.
    • Breed susceptibility, such as in Afghan hounds, is noted.

    Conclusions:

    • Canine adenovirus type 1 is a significant cause of kerato-uveitis and corneal edema in dogs.
    • Understanding the immune-mediated mechanism is crucial for managing the condition.
    • The development of canine adenovirus type 2 (CAV-2) vaccines aims to prevent these adverse ocular events.