Care for deaf patients in sign language, Nice Hospital, France. Consultation with a patient who is under 40 and deaf, suffering from Usher syndrome, a genetic disease associating deafness and chorioretinitis with vestibular disorders. He has been in the service for almost 15 years. An intermediary is present. She is deaf and adapts her level of communication to be more clearly understood. She has a good level of education and intervenes to help the patient understand. This mediator does not oralize at all. Unlike the interpreter, she is not neutral and reformulates what the doctor says in order to be understood by the patient.,NICE,PACA,FRANCE