RBPMS and attention deficit-hyperactivity disorder: The ADHD model (SHR Veh) presented a decrease in the number of cones and RGCs (arrestin+ and RBPMS+ cells; 22.2 ± 4.9 and 24.9 ± 0.9 cells/mm retina, respectively) when compared to the control rats (WKY Veh; 46.2 ± 4.3 and 43.0 ± 2.6 cells/mm retina, respectively) (Figure 3B,F).