Our primary outcomes will regard myopia progression and axial elongation as efficacy criteria. Myopia progression will be assessed as mean change in refractive error, measured in diopters, per year. Mean change in axial length, measured in millimeters, per year, will also be evaluated. Outcomes reporting a change in other than a 12-month period will also be accepted and described. Reported adverse events will be regarded as safety criteria. A descriptive approach of side effects will be performed, and odd ratios will be presented, if provided by the authors.