Plastic Lenses

Would it be possible to create prescription glasses lenses? This could be helpful in countries with limited resources. If some basic molds could be made, the prescription might not be perfect but it would be a step up.
Thoughts?

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Main problem here is recycled plastic transparency(lucidity)
there are some topics about that. somewhere in forum.

PET bottles have a pretty good Lucidity.

This idea seems to be worth trying. Also for making Fresnel lenses perhaps.