[Pupil and light sense perimetry with light and dark adaptation (author's transl)]

In comparison to light sense perimetry the use of pupillomotoric thresholds determination in the central region of the retina at various visual field illumination (10 asb, 0,1 asb, 0,001 asb, 45 degrees Meridian, 27' testpoint) has yielded the following results: 1. The maximum of the pupillomotoric sensitivity profile lies independant of the state of adaptation in the fovea. 2. Irrespective of adaptation state the course of the pupillographic profile curves are congruent. 3. Sensoric determinations show a slow flattening of the curves to the periphery whereas comparatively pupillographic determination yields a steep course (difference in areal summation). 4. In total the pupillomotoric sensitivity increases only about 10 db during the change of adaptation from light to dark. --As the phasic pupillo-light-reflex is elicited by rods and cones the differences between the sensoric and pupillomotoric threshold determinations must arise from intraretinal neuronal processes and not from the receptor reactions.