A rare, autosomal recessive inherited syndrome caused by mutations in the CDH23, CLRN1, GPR98, MYO7A, PCDH15, USH1C, USH1G, and USH2A genes. It is characterized by hearing loss or deafness and progressive loss of vision. The loss of vision is the result of retinitis pigmentosa.

Hereditary disorder believed to occur in two forms: (1) characterized by congenital deafness and severe retinitis pigmentosa, and (2) in which the inner ear and retina are less severely affected; most cases are transmitted as autosomal recessive trait, but some forms are X-linked.

Usher syndrome is an inherited disease that causes serious hearing loss and retinitis pigmentosa, an eye disorder that causes your vision to get worse over time. It is the most common condition that affects both hearing and vision. There are three types of Usher syndrome: People with type I are deaf from birth and have severe balance problems from a young age. Vision problems usually start by age 10 and lead to blindness.; People with type II have moderate to severe hearing loss and normal balance. Vision problems start in the early teens and get worse more slowly than in type I.; People with type III are born with normal hearing and near-normal balance but develop vision problems and then hearing loss. There is no cure. Tools such as hearing aids or cochlear implants can help some people. Training such as Braille instruction, low-vision services, or auditory training can also help. NIH: National Institute on Deafness and Other Communication Disorders

Usher syndrome is an inherited disease that causes serious hearing loss and retinitis pigmentosa, an eye disorder that causes your vision to get worse over time. It is the most common condition that affects both hearing and vision. There are three types of Usher syndrome: People with type I are deaf from birth and have severe balance problems from a young age. Vision problems usually start by age 10 and lead to blindness.; People with type II have moderate to severe hearing loss and normal balance. Vision problems start in the early teens and get worse more slowly than in type I.; People with type III are born with normal hearing and near-normal balance but develop vision problems and then hearing loss. There is no cure. Tools such as hearing aids or cochlear implants can help some people. Training such as Braille instruction, low-vision services, or auditory training can also help. NIH: National Institute on Deafness and Other Communication Disorders

Autosomal recessive hereditary disorders characterized by congenital SENSORINEURAL HEARING LOSS and RETINITIS PIGMENTOSA. Genetically and symptomatically heterogeneous, clinical classes include type I, type II, and type III. Their severity, age of onset of retinitis pigmentosa and the degree of vestibular dysfunction are variable.

Usher syndrome is a genetic disorder characterized by sensorineural hearing loss or deafness and progressive vision loss due to retinitis pigmentosa. Sensorineural hearing means it is caused by abnormalities of the inner ear. Retinitis pigmentosa is an eye disease that affects the layer of light-sensitive tissue at the back of the eye...