[Hereditary maculopathy in typical retinitis pigmentosa. Apropos of 40 cases].

The authors have studied the hereditary mode of transmission of 40 maculopathy associated to typical pigmentary retinopathy. The genealogic tree was established for each case along with a complete exam. The three types of modes found were: 12.5% dominant autosomal, 15% recessive autosomal, 72.5% sporadic. The authors discussed the different mode of hereditary transmission in a family of three generations. They point out the difficulties of the genetic investigations and concluded that the maculopathy doesn't have a specific transmission mode in the typical retinitis pigmentosa.