title: Ocular involvement in Niemann-Pick disease type B.
mesh_terms: D002648:Child; D006801:Humans; D008268:Macular Degeneration / Q000201:enzymology / Q000209:etiology*; D008297:Male; D009542:Niemann-Pick Diseases / Q000150:complications* / Q000201:enzymology; D013108:Sphingomyelin Phosphodiesterase / Q000032:analysis
chemical_list: D013108:Sphingomyelin Phosphodiesterase