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by mkotlikov 311 days ago
I use ortho k, I exclusively sleep in my contact lenses, take them out when I wake up and enjoy 20/20 vision for 24+ hours. I don't have to sleep in them every night to maintain 20/20, but I do anyways.

They are basically retainer contact lenses that reshape your cornea as you sleep. It's what's described here minus the pH change and electric potential.