[Color discrimination in heterozygotes]

By the help of Rabkin polychromatics tables and of the AN-59 anomaloscope it is studied the chromatic eye sight at 33 heterozygots. The used tests have permitted the identification of the different types of heterozygots: heterozygots which transmit and manifest only one chromatic anomaly, double heterozygots which manifest clinical one or both anomalies and unmanifested clinical heterozygots. The study of the chromatic eyesight at men from the same family has confirmed the clinical diagnosis of the heterozygots type in every case.