- Each additional hour of daily screen time was associated with a 21% increase in myopia risk.
- Risk of myopia increased significantly between 1 and 4 hours of daily screen exposure in a sigmoidal curve.
- The widespread adoption of smart devices among children introduces a novel dimension to near-work activities.
- Limitations included heterogeneity among included studies, variability in screen time assessment, and low overall certainty of evidence.
- Caution is advised when considering the 1-hour daily screen time safety threshold.
Source: JAMA Network Open
