[hosay123]

Charity school with 25 tablets, shared among 500 poverty-stricken children in a third world country. If the correction can be adjusted in software and this can be made cheaply, it's a no-brainer application. The video indicates that it can indeed be made cheaply and adjusted in software.

Sounds much simpler than trying to ensure a continuous supply of glasses for 500 energetic kids

[Houshalter]

Not necessarily, see this guy for example: https://www.ted.com/talks/josh_silver_demos_adjustable_liqui...

Although I'm skeptical that third world countries will have access to high tech vision correcting tablets but not eyeglasses.