Build schools outside, more hybrid spaces/semi-indoor, spend more time doing activities outside, teach your kids sailing,mountain climbing, astronomy... Etc, engage with more nature. Learning happens in the real natural world as much as it happens in books. Take the books and apply it's lessons to reality. Step out of Plato's cave and discover the world. I grew up with myopia since I was 12. I always wondered why it exists evolutionarily it seems like a huge problem for survival. It's another modern disease. I know what to do to change things for my kids in the future.