[forum_ghost]

Myopia is also correlated with spending less time outdoors.

Your theory about 20 ft is literally correct.

Atropine is successfully used to relax the cilliary muscles.

However, there is lots of anecdata that rigid contacts don’t make your eyesight worse over time.

[graeme]

Interesting, why would rigid contacts lead to less degradation?

[forum_ghost]

just guesses, because they are so infrequently worn these days, is that it somehow prevents eyeball deformation due to its rigidity and so the axial elongation does not occur.

I'm a little sceptical about that theory, but my own rx did not go increase much when I wore RGPs. After that I did have some progression, but also a million other things changed, so who knows.

RGPs however, are quite distinct in that they give absolutely perfect vision. better than soft contacts by a mile. Maybe some refractive thing as well, optometrist told me numerous times under-correction would lead to further progression.

Ortho-K is popular in Asia for prevention, those are rigid lenses worn at night. Deforms cornea a little, so it's like a reversible lasik thing. So, in this case, not only its rigid lenses, they also have weird geometry. Many report significant success.