[Congenital cataract in two families: Heredity and treatment (author's transl)].

A report is given on the inheritance of congenital cataract in two families. While in one family the males were mainly affected, in the second faimily the females were mainly affected with congenital cataract. In our experience an operation is only indicated if the visual acuity is no longer sufficient for day-to day living (less than 0.25).