[chronogram]

This seems ideal. The only question I had was whether it's permanent on living cells, "Potentially reversible" at the end makes me think it is.

[brians]

There’s a current product that does simple mechanical remodeling: sleep with this chunky contact lens in and the next morning you see better. But it wears off in ten hours or less.

[platelminto]

Night lenses! Yeah they're pretty crazy (I'm in the process of getting them and a friend of mine has them). 10 hours is low though - they're supposed to easily make your vision last all day, even two. My friend says he only really stops seeing well after 3 nights of not wearing them.

[zikduruqe]

It's called Ortho-K

https://en.wikipedia.org/wiki/Orthokeratology