A rare inherited disorder characterized by sensorineural deafness at birth or soon after and progressive vision loss which starts during the first decade of life and blindness usually occurs between 20-35 years of age. Symptoms are generally more severe than in type 2 with deafness occurring at birth or during first year and vision loss starting during childhood.
Night blindness Decreased visual acuity Constricted visual fields Learning difficulties Visual difficulties
The signs and symptom information on this page attempts to provide a list of some possible signs and symptoms of Usher Syndrome Type 1. This medical information about signs and symptoms for Usher Syndrome Type 1 has been gathered from various sources, may not be fully accurate, and may not be the full list of Usher Syndrome Type 1 signs or Usher Syndrome Type 1 symptoms. Furthermore, signs and symptoms of Usher Syndrome Type 1 may vary on an individual basis for each patient. Only your doctor can provide adequate diagnosis of any signs or symptoms and whether they are indeed Usher Syndrome Type 1 symptoms.