[Crystalline chorioretinopathy with marginal corneal involvement].

The authors describe central and peripapillary chorioretinal dystrophies seen in 3 patients. In 2 of them a crystalline chorioretinal dystrophy was found. This is compared to the "simple" chorioretinal dystrophy of the third patient. Crystalline deposits in the limbus corneae were found in both patients with crystalline chorioretinopathy. Higher serum cholesterol levels and more widespread chorioretinal dystrophy are associated with greater corneal involvement. Visual acuity, central scotomata and the changes in the electroretinograms correlate with the chorioretinal dystrophy. The crystalline chorioretinopathy found in these patients is associated with Fredriksen's phenotype II, whereas the "simple" form of chorioretinal dystrophy is associated with multiple lipoprotein-type hyperlipidemia.