I believe most damage is done in your prepubescent years. Using this or phones really should be limited until your eyes finishing changing and then you're gucci

I believe most damage is done in your prepubescent years. Using this or phones really should be limited until your eyes finishing changing and then you're gucci. I recall that Singapore went from 17% myopia to around 80% in almost a generation due to the lack of changes in distances that your eyes see in your younger years.