What I don't like in this is the defeatist attitude of "slowing myopia progression".
If you have myopia, your life experience is already ruined, and it's not very much relevant whether it's -2 or -6. You're stuck with glasses either way so why bother "slowing it". Yes you can get retinal detachment but on average you won't.
I'm not even sure I can be bothered to spend effort on "slowing myopia progression" in my children by annoying treatments such as contact lenses or applying topical chicken guano, unless there are serious concerns. If you already have myopia just live with it. I would love for them to not have any myopia at all and perfect vision, though. Just very unlikely provided that basically everybody in my family wears glasses.
> defeatist attitude of "slowing myopia progression"
The global optical business is on the order of $100B in annual revenue.
Reversing or preventing myopia has less economic support, but research continues.
> it's not very much relevant whether it's -2 or -6
Smaller corrections can use CR-39 or even glass, with high optical quality. Lenses for larger myopia corrections become too thick with CR-39 material, requiring "high index" plastics. These have more cost and optical distortion. Smaller corrections are also more amenable to contact lenses.
I wonder if doing the same to TVs and tablets will do anything.