Social Media Use and Adolescent Myopia

Based on the Canadian Health Behaviour in School-aged Children study：

  • Intensity of Use: Intensive use, among girls (38%) than boys (30%). This proportion increases with age.
  • Problematic Use: more prevalent among girls (7.7%) than boys (5.2%).
  • Relationships and Connections: Intensive use with positive social relationships, (relative risk [RR] = 1.40). Problematic use negatively correlated relationships for both boys (RR = 0.58) and girls (RR = 0.48).

TikTok’s Soaring Popularity

  1. Adoption Rate:
    • 67% of American teenagers aged 13 to 17 say they ever use TikTok
    • 16% of all teens use TikTok almost constantly
  2. Facebook’s Decline:
    • The share of teens using Facebook has plummeted from 71% in 2014-15 to just 32% today.
  3. YouTube Reigns Supreme:
    • 95% of teens use YouTube, making it the most widely used platform among those surveyed。
    • TikTok follows closely, with 67% of teens actively using it.

Screen Time Statistics

  • Adolescents spend approximately 7 hours per day on screens.
  • Uninterrupted 20-minute smartphone sessions contribute to myopia risk.
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