[Current diagnostic and therapeutic possibilities in tapetoretinal degeneration].

Recent advances in research have markedly improved the possibility of differentiating between the different kinds of retinitis pigmentosa, and of elucidating prognosis, heredity and in certain cases the precise pathogenesis. Although treatment trials have begun, as yet no adequate treatment is available for the majority of patients with diseases belonging to this category. One approach under discussion is transplantation of fetal retinal cells.