Online/Distance learning: Should you give your child's eyes a screen-time break? – The Village Doctor

Online/Distance learning: Should you give your child’s eyes a screen-time break?

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Children spend more time than ever staring at digital screens—on computers, tablets, TVs, smartphones, and other devices. All that screen time can take a toll on children’s wellbeing, including how their eyes may feel.

Research shows that children begin zooming in on digital media devices, such as their parents’ tablets or smartphones, as young as 6 months old. By their teens, studies have found, kids spend nearly 7 hours a day using screened-based media, watching TV, playing video games, and using social media. Especially if they’re having fun, children might keep playing and watching to the point of eye-rubbing exhaustion.

This doesn’t include additional time spent using screens at school and for homework.

COVID-19 & online learning: watch children’s eye health 

With COVID-19 and a shift to online learning by many schools​, children are spending even more time looking at screens. Screen time limits are also being increased in many families to help children stay entertained and socialize with friends virtually, as they spend m​​ore time at home to prevent the spread of the virus. All of this makes it especially important to take steps that can help prevent tired, sore eyes in children.​​

Why screen breaks are important

Staring at a screen for long stretches without taking breaks can cause symptoms such as:​

  • Eye fatigue. Muscles around the eye, like any others, can get tired from continued use. Concentrating on a screen for extended periods can cause concentration difficulties and headaches centered around the temple and eyes. Children may also use screen devices where lighting is less than ideal, causing fatigue from squinting.
  • Blurry vision. Gazing at the same distance for an extended time can cause the eye’s focusing system to spasm or temporarily “lock up.” This condition, called an accommodation spasm, causes a child’s vision to blur when he or she looks away from the screen. Some studies also suggest computer use and other close-up indoor activities may fuel rising rates of myopia (nearsightedness) among children, although this is not yet proven. More time playing outside may result in healthier vision development in children. 
  • Dry eyes. Studies show that people blink significantly less often when concentrating on a digital screen, which can leave eyes dry and irritated. Desktop and laptop computer use can be especially tough on children’s eyes, because they’re usually situated higher up in the visual field than a book, for example. As a result, the upper eyelids tend to be open wider—speeding up evaporation of the eye’s tear film.

What parents can do

  • Monitor screen time. The American Academy of Pediatrics (AAP) family media use plan and related reports target issues ranging from obesity to sleep problems linked with too much screen time. Although children’s screen time will understandably increase during the COVID-19 pandemic, the AAP encourages parents to do their best to help keep some balance between the digital and real world. Two especially important aspects of this are making sure screens don’t cut into:
    • Sleep. Not getting enough shut-eye leads to tired, sore eyes. The AAP recommends children not sleep with devices in their bedrooms, including TVs, computers and smartphones. In addition, the AAP recommends avoiding exposure to screens for 1 hour before going to bed. Using devices past bedtime, especially for violent video games or shows, can interfere with sleep. Studies also suggest the blue light given off by screens might also make it difficult to sleep. 
    • Exercise. Putting down the device or stepping away from the computer or TV can help avoid eye and vision problems from too much screen time. The AAP recommends children age 6 years and older get at 60 minutes of physical activity each day. Active play is the best exercise for young children. Outside play can also be a great “workout” for children’s vision—giving them a chance to focus at different distances and getting exposure to natural sunlight.
  • Take frequent breaks. Children frequently get so absorbed in what they’re doing that they don’t notice symptoms of eye strain. Remind them to take breaks. The American Optometric Association recommends the 20/20/20 rule: look away from the screen every 20 minutes, focus on an object at least 20 feet away, for at least 20 seconds. In addition, children should walk away from the screen for at least 10 minutes every hour. A simple timer can help your child remember, and there are even software programs that can help by turning off the screen at regular intervals.
  • Remember to blink. Research published in The New England Journal of Medicine says staring at a computer can cut blinking rates by half and cause dry eyes. Encourage your child to try to blink extra, especially when they take breaks. Your pediatrician or eye doctor may recommend moisturizing eye drops or a room humidifier if your child continues to be bothered by dry eyes.
  • Screen positioning. Make sure the screen on your child’s desktop or laptop computer is slightly below eye level. Looking up at a screen opens eyes wider and dries them out quicker. Some experts suggest positioning device screens based on the 1/2/10 rule: mobile phones ideally at one foot, desktop devices and laptops at two feet, and roughly 10 feet for TV screens (depending on how big the screen is). Adjusting the font size—especially on smaller screens—so it’s twice as big as your child can comfortably read may also help reduce eye fatigue.
  • Spotlight on lighting. To cut down on glare and eye fatigue, a study published in Journal of Ophthalmology & Research says the level of lighting in a room when using a computer or other screen should be roughly half what it would be for other activities such as writing on paper or working on crafts. Try to position computers so that light from uncovered windows, lamps and overhead light fixtures aren’t shining directly on screens. Decrease the brightness of the screen to a more comfortable level for viewing. Some optometrists recommend special computer glasses with orange lenses that may also help reduce glare. Children who wear prescription eyeglasses may have an anti-reflective coating added, as well. Computer monitor hoods or shades that attach to the screen may also be an option.
  • Get regular vision screenings. If your child is having blurry vision or similar eye problems, he or she may not speak up. That’s why regular vision screenings are important. The American Academy of Ophthalmology and the AAP recommend children have their eyes checked by a pediatrician at well-child visits beginning at birth. If a problem is found during one of these routine eye exams, your pediatrician may refer you to a pediatric ophthalmologist.

Does my child need blue-light filtering glasses?

You may have heard about special glasses that help filter blue light given off from computers and other screens. Especially with more online learning during the pandemic, many wonder if t​​hese glasses should be on their child’s back-to-school supply list. Although there is no evidence that blue-light is harmful to the eyes, it can make it harder for children to fall asleep and contribute to eye strain, However, turning screens off an hour before bed, using the 20/20/20 rule and the other tips above can help prevent this—no purchase necessary!​

Remember

Children, especially younger ones, will likely need help and reminders to use digital screen devices in an eye-friendly way.

If you have any questions about keeping your child’s eyes and vision healthy, talk with your pediatrician.

More information

Source American Academy of Pediatrics (Copyright © 2017)

[Taken from this healthychildren.org article]

The information contained on this website should not be used as a substitute for the medical care and advice of your pediatrician. There may be variations in treatment that your pediatrician may recommend based on individual facts and circumstances.

Sky Pittson, MD, October 28, 2020