Summer, Screens, and Your Child’s Eyes: What Every Parent Should Know

School is out. Schedules loosen up for most kids, that means more time on devices, gaming, streaming, scrolling, often for hours at a stretch. For parents of children with myopia, or children at risk of developing it, summer can feel like a tug-of-war between screen time and eye health.

The good news is that summer also brings a natural opportunity that doesn’t exist the rest of the year: more time outside. And if your child is nearsighted, or if you’re watching their prescription inch higher every year, that outdoor time is one of the most powerful tools you have.

Here is what the research says, and what you can actually do with it this summer.

Why Summer Matters for Kids with Myopia

Myopia, nearsightedness, happens when the eye grows slightly too long, causing distant objects to appear blurry. The tricky part is that childhood myopia does not just stay put. It tends to progress, meaning the prescription gets stronger year over year as the eye continues to elongate. And a higher prescription comes with higher lifetime risks for conditions like retinal detachment, glaucoma, and myopic macular degeneration.

What researchers have consistently found is that the two biggest environmental factors in myopia, both for onset and for how fast it progresses, are the amount of time children spend doing close-up tasks and the amount of time they spend outside in natural light. Summer shifts both of those dials. Whether it shifts them in the right direction depends on what your child is actually doing with their days.

What the Research Actually Says About Screens and Myopia

It is worth clearing up a common misconception first: screens themselves are not the root cause of myopia. Children have always done close-up work, reading, drawing, puzzles, and their eyes have managed. The concern with screens is the behavior they tend to produce: long, uninterrupted stretches of close focus, often indoors, often replacing time that might otherwise be spent outside.

A 2025 systematic review and meta-analysis published in JAMA Network Open, drawing on data from more than 335,000 participants, found that each additional hour of daily screen time was associated with a 21% higher likelihood of myopia, with risk rising most sharply between one and four hours of daily exposure. That is a meaningful number, but researchers are quick to note that what the screen replaces matters just as much as the screen itself.

When a child is inside on a device, they are missing two things that support healthy eye development: distance viewing, which helps regulate how the eye grows, and natural light, which has been linked in study after study to reduced myopia risk.

The Outdoor Advantage: Why Natural Light Is Different

Here is something that surprises a lot of parents: it is not just about looking into the distance outside. Natural light itself plays an active role in eye development. Exposure to bright outdoor light triggers the release of dopamine in the eye, and dopamine helps slow down the elongation that drives myopia forward.

A 2024 meta-analysis published in Ophthalmic Research found that increasing outdoor time from about 3.5 hours per week to around 16 hours per week was associated with a 53% reduction in myopia onset risk. The relationship was dose-dependent, meaning that more consistent outdoor time corresponded to greater protection. A 2024 Cochrane review reinforced this, finding that school programs that added outdoor time consistently showed lower rates of myopia in children over two and three year follow-up periods.

No screen, no matter how high the resolution, can replicate what consistent daily time outdoors provides. Summer is when that gap is easiest to close.

Practical Tips for a Myopia-Friendly Summer

You do not need a rigid schedule or a ban on devices to make a difference. Small, consistent habits add up. Here are a few that are grounded in the research:

• Aim for 60 to 90 minutes outside per day. This is the threshold most researchers point to. It does not have to happen all at once, two or three outdoor sessions spread through the day count.
• Prioritize unstructured outdoor play over ‘educational’ screen time. The eye does not know whether the screen is showing a learning app or a video game. What it knows is whether it’s inside or outside.
• Morning and late afternoon are ideal outdoor times. Light intensity matters, and midday sun in summer can be harsh. Earlier and later in the day tend to be more comfortable and still provide the light exposure that benefits the eyes.

Outdoor Time Helps, But It Is Not the Whole Picture

Getting your child outside more this summer is genuinely worth doing. But if your child already has myopia, or if their prescription has been climbing year over year, outdoor time alone is not enough to stop that progression.

That is where myopia management comes in. Today, there are several clinically proven treatments specifically designed to slow how fast a child’s myopia gets worse. Not just correct it. Actually slow it down.

As a Treehouse Eyes partner practice, we offer options including:

• MiSight® 1 day contact lenses: The first and only soft contact lenses FDA-approved to slow myopia progression in children ages 8 to 12. Worn during the day like standard contacts.
• Essilor Stellest® lenses: Specialty glasses lenses that look like regular lenses but are designed to slow eye growth. Clinical studies found they slowed myopia progression by an average of 67 to 71% in children who wore them at least 12 hours a day.
• Orthokeratology (Ortho-K): Rigid lenses worn only during sleep that gently reshape the eye overnight, so children can see clearly all day without glasses or contacts. A popular option for kids who play summer sports.
• Low-dose atropine eye drops: A small nightly drop that has been shown in multiple studies to slow eye growth. Simple and well-researched.

The right treatment depends on your child’s age, prescription, and lifestyle. Through the Treehouse Eyes Vision System®, 78% of children showed no myopia progression in their first year of treatment.

Frequently Asked Questions

Does more screen time in summer make myopia worse?
It can contribute, especially when it comes at the expense of outdoor time. Research shows a dose-response relationship between daily screen exposure and myopia risk. The bigger concern with summer screen time is not the screens themselves but the indoor, close-up hours replacing time outside in natural light.

How much outdoor time does my child actually need?
Most research points to 60 to 90 minutes per day as the threshold associated with meaningful protection against myopia onset and progression. Even consistent shorter outdoor periods add up over weeks and months.

When should I talk to an eye doctor about myopia management?
As soon as myopia is diagnosed, or if you notice your child’s prescription changing at each annual exam. Myopia progresses fastest in childhood, typically between ages 6 and 14. The earlier treatment starts, the more effective it can be.

Ready to Take the Next Step?

Summer is actually a great time to schedule a myopia management consultation. Kids are out of school, schedules are more flexible, and there’s time to get a new treatment routine established before fall.

If your child has myopia, or if you’ve noticed their prescription getting stronger each year, give us a call and schedule an appointment. We’re happy to walk through what’s happening with their eyes and what options may be right for them.

You can also:

• Learn more about childhood myopia and treatment options at Treehouse Eyes.
• Book a free virtual consultation with a Treehouse Eyes expert.
• Take the Treehouse Eyes Expert Myopia Risk Assessment.

Their eyes are still developing. Summer is a good time to make the most of that window.