Fig. 5

Comparison of the change in central corneal temperature measured within 1, 3, and 6 s (change in CCT within 1, 3, and 6 s) among the control group, moderate and low post-COVID-19 fever group (M & L fever group) and high post-COVID-19 fever group (H fever group). **P < 0.01 (Tukey’s HSD), ***P < 0.001 (Tukey’s HSD).