[daquisu]

> Perhaps myopia turns into astigmatism if you squint too much?

In my case no. I started with -2.5 for myopia, and was squinting pretty hard for a few months before that. Had no astigmatism

Then I got a bad habit of scratching my eyes whenever I slept too little time. While this happened my astigmatism increased by 0.25 D each year, for 4 years in a row

[benibela]

I do not do scratching.

But perhaps sleeping on the stomach is bad