The Claim
Urban schoolchildren in China spend a greater proportion of their waking after-school hours in near-work activities at a shorter average viewing distance compared to rural schoolchildren.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Schoolchildren in urban areas of China spend more of their after-school time doing close-up tasks like reading or screen use, and hold materials closer to their eyes than children in rural areas.
See the scientific wording
Urban schoolchildren in China spend more time in close near-work activities during after-school hours than rural peers, with an average viewing distance of 30.9 cm versus 34.8 cm and 56% of waking time spent in near work versus 49%, indicating higher visual demand during non-school hours.
When children hold books or screens very close to their eyes for long periods, their eyes constantly strain to focus, which signals the eyeball to grow longer. This longer shape causes distant objects to appear blurry.
What the research says
1 studyKids in Chinese cities hold their books and phones closer to their eyes and spend more time doing close-up tasks like reading or scrolling after school than kids in the countryside, and this study proved it with special gadgets that tracked their habits.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.