Secondary Outcomes
For the intervention group, the mean (SD) SER change over 12 months was –0.35 (0.54) D. For the control group, the corresponding mean (SD) change was –0.76 (0.60) D. The absolute mean difference in SER change between the 2 groups was –0.41 D (95% CI, –0.56 to –0.26 D; The 12-month mean (SD) AL increase was 0.30 (0.27) mm for the intervention group and 0.47 (0.25) for the control group, with an absolute mean difference in AL changes of 0.17 mm (95% CI, 0.11-0.23 mm; 