KnowraUsher syndromeLinked fromLinked fromThe 3 pages that link to Usher syndrome, each with the reason it gives.All 3Related 1Compared with 2Retinitis pigmentosaRelated: Hearing loss is the defining extra-retinal feature that distinguishes this syndromic form.Waardenburg syndromeCompared with: Its hearing and eye effects differ from Waardenburg syndrome’s characteristic pigmentary changes.Alström syndromeCompared with: It combines hearing and vision loss but lacks Alström syndrome’s characteristic obesity and metabolic disease.