What Is Usher Syndrome?
4. Type 3 Usher Syndrome
Children born under this type of Usher start with normal hearing. Deterioration of this sense begins in late childhood to adolescence. It can however often benefit from the use of hearing aids. Vision problems also tend to begin in late childhood to adolescence. It begins with night blindness in the early teens and can result in total blindness by middle age.
Balance is also normal at birth, but in some cases may decline in adulthood. This is the rarest form of Usher that results in late-onset of symptoms. The rate of deterioration can however drastically vary. Sometimes the progression can last several decades.
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