Hereditary Retinoschisis and Early Hemeralopia

Two cases of hereditary hyaloideoretinal degeneration with idiopathic retinoschisis and early hemeralopia (Goldmann-Favre type) are reported. The literature is reviewed and the differential diagnosis discussed. In addition to the typical syndrome, an unusual angiomatosis-like tumor in one case and a lamellar macular hole in the other were found. A possible heterozygous trait in the form of grouped-like pigmentation was discovered in two females, who were otherwise unaffected.