[Hereditary chorioretinal degeneration and nephronophthisis. The role of Senior-Löken syndrome].

Systematic clinical ocular examinations completed by electrophysiological studies were performed on fifty-five children with nephronophthisis. Twenty children, all under ten years of age, had tapetoretinal degeneration, either pure in fourteen cases (Senior-Löken syndrome), either associated with extra-oculorenal abnormalities in six cases (bones, liver, neurology). Twelve older children had a normal examination. Twenty-three children had a normal clinical examination, but non evolutive alterations of ERG.