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Description

Isolated ectopia lentis, known as primary lens luxation, has been recognized as a canine familial disorder for more than 75 years. PLL is encountered at high frequency in several terrier breeds and in some other breeds with probable terrier co-ancestry. In most instances, PLL goes undetected until one of the lenses is grossly displaced from the patellar fossa. Concurrent iridodonesis usually signals subluxation in the opposite eye. Gross displacement of the lens in the second eye often follows weeks or months later. Ultrastructure abnormalities of the zonular fibers are already evident at 20 months of age, long before the initial luxation that typically occurs when the dogs are 3 to 8 years old.

 

Inheritance: autosomal recessiveread more

Mutation: ADAMTS17 gene (Farias et. al. 2010)

Genetic test: Disease or carrier can be identified by genetic testing at any age. The PCR method used for testing is extremely accurate and allows complete differentiation between affected animals, carriers and healthy dogs.

Disease control: read more

Affected breeds: Miniature Bull Terrier, Tibetan Terrier, Parson Russell Terrier, Jack Russell Terrier, German Jagdterrier, Chinese Crested, Lancashire Heelers, Patterdale Terrier, Fox Terrier, Toy Fox Terrier, Sealyham Terrier, Volpino Italiano, Welsh Terrier, Australian Cattle Dog, Yorkshire Terrier, Rat Terrier, Tenterfield Terrier 

Sample: EDTA whole blood (1.0 ml) or buccal swabs. Detailed information about sampling can be found here.

 

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