Comment by stevebmark

> The near work hypothesis, also referred to as the "use-abuse theory" states that spending time involved in near work strains the intraocular and extraocular muscles.

Goodness Wikipedia, this isn't the theory at all. It has nothing to do with muscle strain. We know for a fact that in youth, the eyeball grows longer when it's overfocusing (especially in fovea), and stops growing when things are blurry. That's how it maintain focus as you grow and age. This isn't a theory, it's how the eye works. There are already multiple types of technology that successfully slow and stop myopia based on this principle, as listed in my post.

The mechanism of outdoor light is just a hypothesis without known direct link. It may be related but there's no direct evidence for it yet.