The mechanisms for developing myopia have been pretty well understood for a while now. I suspect the lack of an investigation into prevention had more to do wi

The mechanisms for developing myopia have been pretty well understood for a while now. I suspect the lack of an investigation into prevention had more to do with people not really caring until now. I bet that myopia prevalence in China is approaching 100%, especially for "children of the lockdown", and so it's getting critical attention as a public health crisis. There were doctors who had technique for preventing/halting myopia from developing in children, but it wasn't this mainstream thing, and it certainly wasn't pushed on people.