Retinal Dysplasia

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                      General Information



Retinal dysplasia is abnormal development of the retina.  It is a

congenital disease (present at birth), and the causes include

viruses, nutritional deficiencies, injury during fetal

development, irradiation and genetic influences.



Retinal dysplasia is generally detected early in life and may or

may not cause blindness.  In inherited conditions, the trait is

autosomal recessive, which means that both parents are genetic

carriers, even if they do not show the disease themselves.



Other defects, such as cataracts, retinal detachment and

skeletal deformities, may be associated with retinal dysplasia.

Any breed can be affected, but only a few transmit it

genetically.  Such breeds include Bedlington Terriers, Springer

and Brittany Spaniels, American and English Cocker Spaniels,

Shetland Sheepdogs, Rottweilers, Australian Shepherds,

Borzois, color-dilute Collies, Labrador Retrievers and

Harlequin Great Danes.



                 Important Points in Treatment



1.  There is no treatment and no cure.



2.  The best prevention is to breed only individuals that do not

    show signs of the disease.



3.  Your pet's eyes should be examined and re-evaluated

    periodically if retinal dysplasia is suspected or if there is

    a history of the disease in your pet's ancestors.