Two questions come up in my exam room more than almost any others right now: how much screen time is actually okay, and is my child’s school Chromebook making their eyesight worse. Since school is back in full swing, I wanted to answer both honestly, the way I actually answer them for the families I see.
There isn’t one number that fits every age
I wish I could give you a single number and call it done, but that’s not how screen time and eye strain actually work. What I pay more attention to than the total minutes is the pattern. Long, uninterrupted stretches on a screen are harder on developing eyes than the same amount of time spread out with real breaks in between.
If you want an actual reference point by age, the American Academy of Pediatrics publishes guidance families can use to build a plan around their child’s age and routine. You can find it at healthychildren.org. I point parents there often, since it’s more useful than a single blanket number.
Is the school Chromebook the problem?
This is the one I get asked constantly, and the honest answer is: not on its own. A Chromebook used for schoolwork isn’t inherently worse for a child’s eyes than a book or a tablet. What actually adds up over the course of a school day is the combination: close-up focus, long stretches without a real break, and very little visual variety, since the eyes are locked at nearly the same distance for hours.
So when a parent asks if the Chromebook is “causing” their child’s eyes to get worse, I usually reframe it. It’s less about the device and more about the pattern around it.
What actually helps with screen time and eye strain
A few things I tell parents that make a real difference without requiring a total screen overhaul:
- Build in short breaks during long homework or reading stretches
- Notice if your child is holding the screen unusually close (this connects to what’s sometimes called the Harmon distance, the recommended reading distance for comfortable, low-strain focus)
- Watch for squinting, rubbing, or complaints of blur after a long stretch of screen use, since those are worth mentioning at an eye exam, not just brushing off as tiredness
When it’s worth bringing up at an exam
If your child’s eyes seem tired, irritated, or strained on a regular basis, that’s worth mentioning at their next visit, even if you’re not sure it’s “serious” enough to bring up. I’d rather hear about it and rule something out than have a parent wonder for months whether it’s normal.
If screen time and eye strain have been a recurring topic at your house this school year, schedule a pediatric eye exam with Navigation Eye Care in Chesapeake, and we’ll take a real look at what’s going on.
Related reading: pediatric eye exam in Chesapeake · school vision signs to watch for · myopia management for children