Does sitting close to screens damage vision?

What the evidence says

The idea that sitting close to a TV or phone will 'ruin' your eyes has been around for generations, but eye researchers describe this as an old wives' tale. Sitting close does not damage the structure of the eye or the retina, and it does not cause permanent vision loss on its own.

What close screen viewing can do is cause digital eye strain. This means tired, dry, or irritated eyes, headaches, and blurry vision after long periods of screen use. These effects are uncomfortable but temporary, and usually improve with rest, blinking more, and taking breaks such as looking at something far away every 20 minutes.

There is an important twist. Children who sit very close to a screen sometimes already have myopia, a condition where distance vision is blurry, so they move closer to see clearly. In that case, sitting close is a sign of an existing vision problem, not the cause of one.

Separately, researchers have found that children who spend a lot of total time on screens, especially indoors, do develop myopia somewhat more often. But most experts think this is mainly because heavy screen use often means less time spent outdoors in natural light, which seems to help protect against myopia, rather than because of how close the screen is held. This research is based on population studies, not controlled experiments, so it shows a pattern rather than proof of direct cause.

Regular eye exams matter more than worrying about screen distance. If a child seems to be sitting unusually close to screens or squinting, an eye exam can check for a correctable vision problem.