Eye health resources

What effect can screen time have on children’s eyes?

Whether learning, relaxing, or socializing, digital devices are a huge part of children's lives. Parents may naturally wonder how all this screen time affects their kids’ eye health, so we’ll help you explore the facts behind screen time and discover simple, healthy habits that'll help children enjoy their devices safely.

Medically reviewed on May 22, 2026

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Published on August 21, 2024; Updated on June 16, 2026

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5 minute read

Key takeaways

Digital Eye Strain (DES) is common with too much screen use, and associated with symptoms like dry eyes, headaches, and blurry vision.
Increased screen time in children is linked to a rise in myopia (nearsightedness), with nearly one in three children in the U.S. affected
To reduce eye strain, encourage your family to follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds.
Other healthy habits include maintaining proper screen distance, adjusting screen brightness, encouraging outdoor time, and scheduling regular eye exams to protect long-term vision.

Children’s lives are intertwined with their digital devices

Let’s face it: screen time has become ubiquitous in today’s digital era. Children have a more intimate relationship with their digital devices than any generation before them—they learn from their devices, find entertainment, and interact with their friends. In short, they grow up dependent on these tools to meet their social, education, and entertainment needs.

Recent studies, including data from the Centers for Disease Control and Prevention, show half of all teenagers in the US spend four or more hours a day on screens for non-school activities. Even without factoring in schoolwork on a digital device, that is a lot of time looking at a bright display. While there are many upsides to connectivity, too much screen time can affect the overall health of a child's eyes.

What happens when kids stare at screens

Too much screen time can impact a child's eyes by causing digital eye strain, influencing myopia (nearsightedness), and disrupting natural sleep cycles potentially due to blue-violet light exposure.

Children and digital eye strain

Digital eye strain isn’t just one thing, it’s a group of symptoms that happen when a person uses digital devices for a long time. Symptoms include:

Eye strain
Headache
Blurry vision
Dry eyes
Neck and shoulder pain

What causes digital eye strain

When children look at their phones, tablets, or even the TV, their eyes focus on a fixed distance for long periods. This constant focus makes the eye muscles work harder than usual. In addition to that, a person’s blink rate drops by up to 60% when focusing on screens. Blinking is how the body naturally coats the eye with tears, and less blinking reduces moisture and causes irritation. When this happens, you might notice your child rubbing their eyes or complaining about dry eyes, headaches, and blurry vision.

Screen time and myopia

Nearsightedness, or myopia, is increasing among children worldwide. It affects one in three American children and up to 90% of teenagers and adults in Asia. There’s no conclusive evidence that screen time alone is responsible, but there is evidence that the real culprit may be "near work.”

Near work means focusing closely on objects for long periods. This includes reading a book, drawing, or playing a game on a tablet. When children spend hours engaged in near work, they spend less time playing outside. Studies show that spending time outdoors, especially in early childhood, may actually slow the progression of nearsightedness.

Beyond vision: sleep and overall well-being

Screen time can affect more than just your child's eyes. It can affect:

Sleep
Evening exposure to blue light from digital devices can suppress melatonin, a hormone that controls our sleep cycles. Without enough melatonin, children may struggle to fall asleep and get the deep, restorative sleep their developing brains require.
Posture
Hours spent hunching over laptops or phones are associated with poor posture. Medical experts sometimes call this "tech neck," and this can lead to pain in other parts of the body as well.
Mental health
Constant notifications and overstimulation can overwhelm young minds, leading to heightened feelings of anxiety and irritability. This can show itself via difficulty managing emotions, increased aggression, or heightened sensitivity to stress. Excessive screen use can also disrupt the daily routines needed to support mental well-being, like getting enough sleep and playing outside. Over time, this imbalance may hinder the development of essential social skills and contribute to feelings of isolation.

Five tips to help protect your child's eye health

As a parent, you hold the power to build healthy habits. One thing that can help is the 20-20-20 rule—every 20 minutes look at something 20 feet away for at least 20 seconds. The American Academy of Ophthalmology recommends a simple BLINK strategy to support children's vision:

Blink: Encourage your child to blink frequently to moisturize their eyes.
Lubricate: Use artificial tears to keep eyes hydrated if they feel dry.
Inches away: Keep screens an arm's length away and slightly below eye level.
Near device breaks: Remind your child to go outside, look out a window or play with a pet between tasks
Know your sources: Rely on trusted eye health professionals for medical advice.

Screen time recommendations by age

You want practical guidance—that’s why age-based recommendations help make things simple. Here’s what the experts suggest for keeping screen time balanced across childhood:

Under 1 year: No screen time at all, except for video chatting with loved ones.
Ages 1–2: Try to avoid screens as much as possible. If introduced, keep it to short, interactive moments—always alongside a parent or caregiver.
Ages 2–5: Limit sedentary screen time to no more than 1 hour each day. Choose high-quality, educational content and watch together when you can.
Ages 6 and up: While there’s no universal limit, encourage consistent boundaries. Prioritize healthy screen habits—breaks for movement, time outdoors, and device-free moments as a family.

Remember, these recommendations are a guideline, not a rulebook. Your family’s rhythms are unique, and you know your child best. Focus on finding a balance that feels right—one that supports learning, connection, and joyful exploration—on and off the screen.

Put yearly comprehensive eye exams on your calendar

Screen time for children has become the norm, but by following the tips above, you can help protect your children's eyes from things like digital eye strain and other eye issues. Even so, the best way to stay on top of your child's eye health is to schedule yearly comprehensive eye exams. A comprehensive eye exam is much more extensive than an annual vision screening at school and can detect early signs of vision issues like myopia as well as more than 270 systemic and chronic diseases.

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FAQs

Frequently Asked Questions

How much screen time is too much for younger children?

The World Health Organization suggests no screen time for children under one year of age. For children aged two to four, they recommend no more than one hour of sedentary screen time a day. Building healthy habits early sets the stage for a lifetime of wellness.

Do blue light glasses protect children's vision?

Many parents ask about special eyewear for computer use. The American Academy of Ophthalmology does not recommend blue light glasses for children. The best way to reduce eye strain is by taking frequent breaks and monitoring the total amount of screen time.

How can I help my child avoid digital eye strain?

To help your child avoid digital eye strain, encourage them to follow the 20-20-20 rule. This means taking a 20-second break to look at something at least 20 feet away every 20 minutes. Additionally, ensure they use screens at eye level and in a well-lit environment to reduce glare and discomfort.

Does screen time cause permanent vision damage?

While prolonged screen time might lead to temporary discomfort like eye strain or dry eyes, current research does not suggest it causes permanent vision damage. However, maintaining balanced screen time and taking regular breaks is essential for overall eye health.

When should children have their first eye exam?

The American Optometric Association recommends scheduling a child’s first comprehensive eye exam at six months of age, followed by another exam at three years old, and again before starting school. Regular check-ups help detect and prevent issues early.

Are contact lenses safe for kids and teens?

Yes, contact lenses can be safe for kids and teens when used responsibly. Many children as young as eight years old can handle contact lenses with proper guidance. Talk to an eye care professional about whether your child is ready and explore options like daily disposable lenses for extra convenience and hygiene.

What symptoms indicate my child might need glasses?

Some common signs that your child might need glasses include squinting, sitting close to the TV, complaining of blurred vision, consistently covering one eye, or struggling in school. If you notice these symptoms, schedule an eye exam with a professional.

Can computer screen covers help prevent digital eye strain?

The recommendation for children is the same as for adults who use digital devices for long periods of time: one of the best ways to prevent eye strain or find relief from it is to take frequent breaks.