Introduction
The pupillary light reflex (PLR) is an autonomic circuit that adjusts pupil diameter to ambient luminance. Cones signal through ON cone bipolar cells, while rods connect via rod bipolars and the AII amacrine relay1 into the ON…

The pupillary light reflex (PLR) is an autonomic circuit that adjusts pupil diameter to ambient luminance. Cones signal through ON cone bipolar cells, while rods connect via rod bipolars and the AII amacrine relay1 into the ON…