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23 wrz 2024 · According to studies, white cats that don’t have blue eyes are only born with deafness 17%–22% of the time. However, white cats with single blue eyes are born deaf 40% of the time...
Waardenburg syndrome is a group of rare genetic conditions characterised by at least some degree of congenital hearing loss and pigmentation deficiencies, which can include bright blue eyes (or one blue eye and one brown eye), a white forelock or patches of light skin.
In white cats with mixed-coloured eyes (odd-eyed cats), it has been found that deafness is more likely to affect the ear on the blue-eyed side. [1] Odd-eyed white cats have one blue eye and one yellow, amber, copper/orange or green coloured eye.
5 wrz 2018 · If a white cat has 2 blue eyes, it is 3-5 times more likely to be deaf than a cat with 2 non-blue eyes, and a cat with 1 blue eye is about twice as likely to be deaf as a cat with 2 non-blue eyes. In addition, longhaired white cats are 3 times more likely to be bilaterally deaf.
15 wrz 2021 · Deafness in white cats with blue eyes is a form of congenital deafness medically known as unilateral or bilateral congenital sensorineural deafness. Dominant (epistatic) white is a masking gene that overrides all other coat colours and is symbolised with the letters W D.
Hereditary deafness is a major concern in white cats, and even more so if one or both irises are blue in color. Researchers found that only 17 to 22 percent of white cats with non-blue eyes are born deaf.
9 kwi 2009 · For example, only 40% of "odd-eyed" white cats with one blue eye are deaf. And only 65-85% of white cats with two blue eyes are deaf. The symptoms depend on which of the genes I listed above are not working right. We don't have all the answers on exactly how changes in these genes cause WS.
