Fig. 3

Effects of frequency of colour flickers on variability of accommodation response (VAR) in the emmetrope (EMM) and myope (MYO) groups under the different colour conditions. Different uppercase letters above the error bars indicate significant differences among frequencies in the MYO group. Different lowercase letters above the error bars indicate significant differences among frequencies in the EMM group. The above-line asterisks indicate significant differences between the EMM and MYO groups (LSD post hoc test; *p < 0.05, **p < 0.01). R/B indicates red/blue flicker, R/G indicates red/green flicker, and B/G indicates blue/green flicker