Figure 1From: System and measurement method for binocular pupillometry to study pupil size variability Schematic diagram of the system. The structure of the system and principle of its operation (the components and their arrangements relative to the eyes). Abbreviations: OS – the left eye. OD – the right eye. IR_OS – IR illuminator for the left eye. IR_OD – IR illuminator for the right eye. VIS_OS – VIS stimulator for the left eye. VIS_OD – VIS stimulator for the right eye. PC-computer.Back to article page