[Normal values in the Aulhorn flicker test].

In this paper the results of the Aulhorn flicker test in 105 healthy subjects are described. With decreasing flicker frequencies there was an increasing sensitivity to brightness below the individual flicker fusion frequency. These results contrast with those obtained in patients with acute optic neuritis. In these patients the sensitivity to brightness decreased at low flicker frequencies. The range of frequency intervals between 3 and 50 Hz in which the maximum increase in brightness sensitivity was be observed was also investigated. The results have been compiled in a diagram for clinical use.