In 1855, von Graefe first described the retinitis of pregnancy. Since then many cases have been reported, but for the most part singly, as the condition is not common. The first large series (thirty-five cases) was reported by Silex,1in 1895. This author believes that retinitis occurs once in about every 3,000 pregnancies, but states that cases found in large clinics are of a severer nature, with the result that there is a much higher percentage in this class. Schiötz,2for instance, in his series from the Christiana clinic, found retinitis once in every 240 pregnancies. Other series have been reported by Burnier, Rochon-Duvineaud and others. OCCURRENCES IN PRIMIPARAS AND MULTIPARAS At one time there was the feeling that retinitis was more common in primiparas. This, however, has not been borne out, as Burnier3has found in the literature fifty-one primiparas and sixty-eight multiparas with retinitis. In