Die Fernsehbildanalyse

Abstract

An infrared-sensitive TV Camera has been fitted into a projection perimeter, which allows to control fixation independent of the particular background illumination. The consensual pupil light reflex, triggered by the test light of the perimeter, is measured and registered with a special TV processor designed for this purpose. The method was tested for its efficiency on four healthy volunteers. The course of sensory and pupillomotor thresholds were measured on the 135 degree meridian of the visual field. Determinations were conducted in the photopic range of 10 asb background illumination with two test points of 27' and 7'. A difference of 10 dB was found between the sensory and pupillomotor thresholds.