Congenital Stationary Night Blindness (CSNB) is a hereditary disease which can be tested with a DNA test. Congenital Stationary Night Blindness is an eye disease with slow retinal degeneration that at first stage causes night blindness. Day vision in affected dogs ranges from normal vision to profound day blindness. The hereditary disease has a characteristic clinical phenotype, consisting of profound visual impairment present already at 5-6 weeks of age. Older dogs may show subtle retinal abnormalities indicative of a slowly progressive retinal degenerative process.
Inheritance: autosomal recessive - read more
Mutation: RPE65 gene
Genetic test: The method used for genetic testing is extremely accurate and allows complete differentiation between affected animals, carriers and healthy dogs. DNA testing can be done at any age.
Disease control: read more
DNA test sample: EDTA whole blood (1.0 ml) or buccal swabs. Detailed information about sampling can be found here.