Study researchers investigated the association between digital screen time and myopia. They found a significant dose-response relationship, where each additional hour of daily screen time was associated with a 21% increase in myopia risk. The risk peaked between 1 and 4 hours of daily screen exposure in a sigmoidal curve. The widespread use of smart devices among children and its impact on near-work activities was highlighted. The researchers identified limitations in study methodologies and the overall certainty of evidence was rated as low. While caution was advised when considering the 1-hour daily screen time safety threshold, the results could inform future research, educational strategies, and public health policies regarding myopia intervention.

Source: JAMA Network Open