Myopia treatment 'smart glasses' from Japan to be sold in Asia
Ask yourself, how much brighter is it outside than inside (assuming a sunny day vs a brightly lit office)?Before looking into this, I would have guessed 2X or 3X, but would you believe it's actually over 100X!I bet most people's guess would also be off by 1 or 2 orders of magnitude.Even outdoors in the shade, it is over 50X brighter than indoors.(For specific numbers and comparisons, see: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6656201/ )Apparently, our eyes adjust so quickly to the difference that we have a very poor sense of the magnitude of light change between indoors and outdoors.I bring this up because one of the largest factors in myopia development appears to be outdoor light exposure in childhood.Genetics are likely a factor too, but light exposure seems to have a huge effect: 
"The prevalence of myopia in 6- and 7-year-old children of Chinese ethnicity was significantly lower in Sydney (3.3%) than in Singapore (29.1%), while patterns of daily outdoor light exposure showed that children living in Singapore were exposed to significantly less daily outdoor light than Australian children." (from the same study linked above)The obvious takeaway for parents, schools, and governments: ensure your children have plenty of outdoor playtime. It will greatly reduce instances of myopia (not to mention the benefits from higher Vitamin D levels, exercise, etc).