[Usher syndrome in childhood].
D002675:Child, Preschool; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D003638:Deafness / Q000235:genetics*; D005684:Gait; D006801:Humans; D008297:Male; D009755:Night Blindness; D012174:Retinitis Pigmentosa / Q000175:diagnosis / Q000235:genetics*; D013577:Syndrome