East asia actually has made some progress towards solving the myopia problem.
Miyosmart – research seems to only indicate slower progression. Seems like they their test subjects didn’t have consistent usage, and they didn’t have a standard around how much myopia defocus to create peripherally.
Kubota Glass – operates the same way as miyosmart but with AR. Focuses on lens induced myopia, specifically the peripheral hyperopia.
There was a quote in the Kubota paper about peripheral hyoperia, which makes me think to reduce lens-induced myopia, one should wear lenses that limit the amount of peripheral hyoperia. EndMyopia method of course uses reduced prescriptions, but on top of that maybe it makes sense to wear smaller lenses.
My guess would be it doesn’t make that much of a difference. Then again going from a 35mm lens to a 30mm lens would be roughly 25% less corrected light.
It has been shown that peripheral hyperopic defocus on the retina is the chief driver of axial elongation of the eye11,12,13,
https://www.nature.com/articles/s41598-022-15456-4#author-information
Other notes for today:
- For differentials, do not use high index lenses. They introduced way too much chromatic aberation. Hi-index plastic (zenni 1.67) has Abbe of 32 vs Plastic CR-39 (zenni 1.5) has Abbe of 58, higher is better. In this case, 1.5 is significantly better. I noticed this when looking at the youtube favicon or iOS notification count badges, where in different parts of the lens, the center part of the icon would move around in the red. Very annoying actually
- Cooper vision (COO) owns a lot of the myopia reversal & progression reduction tech like MiSight contacts. I sold off a while back but it might be worth rebuying. At least until I put them out of business