> The more kids difficulty kids had seeing at distance, the less likely they were to spend outside. This is logical, but the evidence still points to something

> The more kids difficulty kids had seeing at distance, the less likely they were to spend outside. This is logical, but the evidence still points to something environmental causing a major shift in levels of myopia. In one generation the rate of myopia in some countries went from 20% to 80%[0]. This means that it isn't genetic, something environmental must have changed to cause this. [0] https://archive.ph/9TlOG https://archive.ph/9TlOG