[The hereditary factor as a criterion for the classification of stationary congenital night blindness (author's transl)].

The night-blind subject examined in 1952 by Schubert and Bornschein was reexamined electrophysiologically. All findings were unchanged. Normal a, d and g-waves in the ERG indicated undisturbed receptor function. Fast and slow oscillations of the EOG were normal. The subjective darkness-adaptation curve revealed minimal scotopic function after the 14th min of adaptation. The significance of clinical and electrophysiological findings for the classification of stationary congenital night blindness is discussed. The hereditary factor appears to be the most preferable criterion for the classification of stationary congenital night blindness.