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Can Too Much Screen Time Cause Myopia in Kids?

Sep 1, 2025 | Children's Eye Health, Myopia Management

Myopia, or nearsightedness, is becoming more common in children, and researchers believe increased screen use may play a role. Our experienced optometrists offer myopia management in Littleton to help slow the progression of this condition and protect your child’s eyesight in the long run. One way to do this is through regular monitoring with a comprehensive eye exam, especially if your child is spending more time on digital devices than ever before. 

In this blog, we’ll explore the connection between screen time and myopia and how to manage the impact of screens on young eyes.  

What is myopia? 

Myopia develops when the eyeball is too long or the cornea (the clear front surface of the eye) is too curved. This prevents light from focusing properly on the retina, causing distant objects to appear blurry. Myopia is a common vision condition that can affect both children and adults, and it typically worsens during childhood as the eye grows. 

Does screen time cause myopia?  

According to a study published in JAMA Ophthalmology, myopia rates in children ages 6–8 rose sharply during pandemic-related home confinement1. The increase ranged from 1.4 to 3 times compared to the previous five years. Younger children seemed particularly vulnerable, likely because their eyes are still in a critical stage of growth. 

Other research shows that high levels of screen time on smartphones increase myopia risk by about 30%2. When paired with excessive computer use, that risk can climb to nearly 80%. This is likely because activities that require focusing up close for long periods, such as reading, gaming, or using devices, can contribute to myopia progression. 

Is myopia genetic? 

Genetics does play a role in myopia. Children with one or both parents who are nearsighted have a higher chance of developing myopia themselves. However, while inherited factors can increase susceptibility, environmental influences such as prolonged near work, screen time, and reduced outdoor activity also significantly impact whether myopia develops or progresses. 

Managing screen time for kids 

Here are some tips to help manage your child’s screen use: 

  • Follow the 20-20-20 rule – Every 20 minutes, have your child look at something 20 feet away for at least 20 seconds. 
  • Encourage frequent breaks – Build in pauses during homework, gaming, or streaming sessions. 
  • Set daily limits – Aim for no more than 2 hours of recreational screen time outside of schoolwork. 
  • Create screen-free zones – Keep mealtimes, bedrooms, and outdoor playtime device-free. 
  • Encourage outdoor activities – At least 1–2 hours outdoors daily can support healthy eye development. 
  • Model healthy habits – Children are more likely to follow screen-time rules when parents lead by example. 

Protecting your child’s vision 

A pediatric eye exam can detect signs of myopia early, even before symptoms are noticeable. At the Eyecare Center of Ken Caryl, we provide pediatric eye exams for children ages 10 months and older, along with comfortable and durable children’s eyewear.  

If your child is diagnosed with myopia, we can recommend myopia management options to slow its progression, such as specialized contact lenses. We can also suggest adjustments to encourage more outdoor time and regular breaks from close-up work. 

Scheduling regular eye exams and monitoring screen habits can help safeguard your child’s vision now and in the future. To schedule an appointment for your child, give us a call today or book online.  

References:  

  1. Wang, J. J., Li, Z., & Xu, L. (2021). Progression of myopia in school-aged children after COVID-19 home confinement. JAMA Ophthalmology, 139(3), 293–300. https://doi.org/10.1001/jamaophthalmol.2020.6016 
  1. (n.d.). Myopia (nearsightedness). American Optometric Association. Retrieved August 12, 2025, from https://www.aoa.org/healthy-eyes/eye-and-vision-conditions/myopia