Since infancy, the patient had developed recurrent infections of the upper and lower respiratory tract; cystic fibrosis and severe immunodeficiency had been excluded. [jamanetwork.com]

COMMON Features of the Disorder Retinitis pigmentosa Night blindness progresses to more visual loss (e.g. peripheral vision loss) Cataracts Developmental delay Balance problems PROGNOSIS Features of the disorder are confined to sensory issues and other [evolvegene.com]

In adolescence, people with Usher syndrome type 1F develop retinitis pigmentosa, an eye disease which causes night blindness and a gradual loss of peripheral vision. Eventually only the central vision remains, creating “tunnel vision.” [jscreen.org]

An individual with loss of peripheral vision has some degree of "tunnel vision" making it difficult to gather comprehensive visual information in an environment; he or she will benefit from learning visual efficiency skills such as scanning an environment [familyconnect.org]

RP causes nightblindness and a loss of peripheral vision through the progressive degeneration of the retina. [sense.org.uk]

The first signs of RP — night blindness and loss of peripheral vision — usually appear in early adolescence. In Usher syndrome type 2 (USH2), newborns have moderate to severe hearing impairment. [blindness.org]

Abstract Usher syndrome type I is an autosomal recessive disease characterized by profound congenital hearing impairment and vestibular dysfunction followed by the onset of progressive pigmentary retinopathy in childhood or early adolescence. [ncbi.nlm.nih.gov]

Patients with type 2 disease generally are hearing impaired but have no balance problems. All patients develop eye problems that cause difficulty seeing in the dark. [clinicaltrials.gov]