A new study originating from South Korea is raising alarms about the potential connection between screen time and the advancement of myopia, commonly known as nearsightedness, in young children. The research, conducted at Jeju National University Hospital, indicates that even a single hour of daily screen exposure could elevate a child’s risk of developing myopia by 5%. This finding underscores the growing need to understand how technology impacts children’s vision, especially as screen usage becomes increasingly widespread in modern society. The study emphasizes a critical point: the more time young children spend indoors engaging with screens, the greater their susceptibility to this vision disorder.

myopia, characterized by clear close-up vision but blurry distance vision, is a growing global health concern affecting individuals of all ages, but especially impacting children whose eyes are still developing. In 2015, it was estimated that approximately 1.4 billion people worldwide were living with myopia,with a staggering 163 million experiencing severe forms of the condition. The escalating prevalence of myopia has spurred researchers worldwide to investigate potential contributing factors, with a particular focus on the pervasive use of digital devices in childhood.

The study, published in JAMA Network Open on February 21, 2025, delved into the correlation between screen time and the risk of myopia development. Researchers at Jeju National University Hospital in South Korea meticulously analyzed data from 45 separate studies, encompassing a total of 335,524 participants. The average age of the children involved in these studies was nine years old. The comprehensive analysis revealed a statistically significant association between increased screen exposure and a higher likelihood of developing myopia.

The study’s findings suggest a concerning trend. According to the research, Each additional time of exhibition the screens increases the risk of myopia, especially in the event of combined use of several devices. This implies that the cumulative effect of using multiple devices simultaneously, such as smartphones, tablets, and computers, may further intensify the risk of developing nearsightedness.The researchers emphasize that their findings could have far-reaching implications for future research endeavors, educational strategies, and public health policies aimed at addressing what some experts are calling a growing myopia pandemic.

While genetic predisposition undoubtedly plays a role in the development of myopia, environmental factors, such as prolonged screen exposure and insufficient outdoor time, are increasingly recognized as significant contributors. Previous research has projected that 40% the potential share of myopic children and adolescents by 2040 worldwide. This alarming projection underscores the urgent need to understand and mitigate the risk factors associated with the development and progression of myopia in young people.

The South Korean researchers’ findings provide specific data points regarding the correlation between screen time and myopia risk. They suggest that just one hour of daily screen exposure increases the risk of myopia by 5%. This risk escalates substantially with increased screen time, rising to 54% for two hours and 97% for four hours. Based on these findings, the study authors recommend limiting screen time for young people to no more than one hour per day. They also emphasize the critical importance of encouraging children to spend more time outdoors, engaging in activities that promote both eye health and overall well-being.

It’s significant to note a crucial caveat highlighted by the scientists: they have not established no cause and effect link between screen and myopia. The study suggests that the issue primarily stems from children spending excessive amounts of time indoors,which is considered an aggravating factor in myopia development. Overexposure to screens may contribute to a more sedentary lifestyle, further increasing the risk of myopia and other health problems.

Is Screen Time Stealing Our Children’s Sight? A Myopia Expert Weighs In

Over 1.4 billion people worldwide suffer from myopia—nearsightedness.Is screen time a major culprit in this global vision crisis?

Interviewer (Senior Editor, world-today-news.com): Dr. Anya Sharma, a leading ophthalmologist specializing in pediatric vision, welcome to World Today News. Recent studies strongly correlate increased screen time in young children with a higher risk of developing myopia.Can you elaborate on this concerning trend?

Dr.sharma: Thank you for having me. The link between excessive screen time and the growth of myopia in children is a meaningful concern and a topic of extensive research. Studies, like the one from Jeju National University Hospital, show a clear association: increased screen time corresponds to an increased likelihood of nearsightedness. While it hasn’t been definitively proven as a direct causal link, the correlation is undeniable, and the potential risks are alarming. We certainly know that children who spend more time engaging with screens spend less time outdoors, a crucial factor contributing to the development of this condition.

Interviewer: The study mentioned a 5% increased risk of myopia for every hour of daily screen time. How should parents interpret these statistics and apply this data to their children’s daily routines?

Dr. Sharma: While the 5% figure is a useful benchmark, framing the facts in terms of “increased risk” is very important. It is not deterministic. However, it highlights that screen exposure contributes to a greater likelihood of myopia. The fact that repeated exposure escalates the risk underscores the importance of moderation. Parents should focus on implementing balanced screen time strategies—meaning not just limiting hours but also ensuring a mix of outdoor activities and near-work breaks. It’s about creating a healthy lifestyle, not just policing screen time. Think of it in terms of mindful screen use rather than outright restriction.

Interviewer: Beyond screen time itself, what other contributing factors influence the development of myopia in children?

Dr.Sharma: Myopia is a complex issue influenced by several factors.Genetics play a significant role; some children are predisposed due to family history. Though, environmental factors are equally crucial. limited time spent outdoors, frequently enough accompanied by increased screen time, is a powerful contributor. Lack of exposure to natural light impacts the eye’s development. near-work activities without regular breaks can also strain the eyes increasing the risk of myopia. Thus, understanding the interplay between genetics and environmental factors is critical for designing effective preventive measures.

Interviewer: Are there proven strategies to mitigate the risk of myopia in children? What practical steps can parents, educators, and healthcare providers take?

Dr. Sharma: Absolutely! We can take proactive steps to counteract the increasing prevalence of childhood myopia. Here’s a breakdown of crucial strategies:

• Maximize Outdoor Time: Encourage at least two hours of daily outdoor activity.The natural light and distance focusing help reduce the risk.
• Implement Screen Time Limits: Establish reasonable screen time restrictions. The goal isn’t complete elimination but rather mindful usage.
• Promote Regular Breaks: When children engage in near-work activities (reading, writing, etc.), encourage regular breaks allowing for distance vision. The 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds) is useful.
• Regular Eye Exams: Early detection is key. Regular extensive eye exams enable early intervention, ensuring optimal vision development.
• promote Healthy lifestyle: Encourage balanced nutrition, sufficient sleep, and regular physical activity – all are vital for overall health and eye development.

Interviewer: Given the global concern surrounding the rise of myopia, what further research is necessary to better understand and address this issue?

Dr. Sharma: While considerable research has been done, further examination is crucial. We need more long-term studies determining the long-term effects of different types of screen usage, studying varying degrees of screen exposure correlated with myopia development and also focusing on the intricate link between genetics, lifestyle, and myopia progression. Collaboration between ophthalmologists, educators, and public health officials is essential to develop and implement comprehensive prevention programs.

Interviewer: Dr. Sharma, thank you for sharing your invaluable insights on this critical public health concern. Your recommendations offer a much-needed roadmap for parents and caregivers hoping to protect their children’s vision.

Dr. Sharma: My pleasure.It’s crucial to remember that, while the risk is real and concerning, proactive steps offer enormous potential for mitigating the problem of childhood myopia.

Final Thought: Protecting your child’s vision should be a top priority. By actively embracing the strategies discussed, parents and educators can significantly contribute to a healthier, brighter future for our children. Share your thoughts and experiences in the comments section below!