This article is written in a way that will propagate the myth that screens are bad for your eyes. Screens are not uniquely bad. The myopia epidemic is not caused by screens per se, but by a lack of time outdoors during childhood. What is it about time outdoors that prevents myopia? It is some combination of much brighter light, broader light spectrum, and objects in your peripheral vision being farther away. I don't think it is fully known yet which of these factors is most important, and I am skeptical of claims that one in particular is to blame over the others. But ultimately some combination of these factors provides the signal to your retina to stop growing once it reaches the right size, which prevents myopia.
As long as you get a few hours outdoors most days during childhood, it doesn't really matter (from the perspective of myopia prevention) if you spend your indoor time in front of a screen or not. And if you don't get that outdoor time, avoiding screens won't save you from myopia. Screens are not really relevant here except to the extent that they encourage children to spend less time outside. You could just as easily blame HVAC or other conveniences of modern homes that make it nicer to stay inside.
As long as you get a few hours outdoors most days during childhood, it doesn't really matter (from the perspective of myopia prevention) if you spend your indoor time in front of a screen or not. And if you don't get that outdoor time, avoiding screens won't save you from myopia. Screens are not really relevant here except to the extent that they encourage children to spend less time outside. You could just as easily blame HVAC or other conveniences of modern homes that make it nicer to stay inside.