It works, even if it's just a placebo. I have even more dioptres than you, around 5 for each eye and a nasty cylinder (astigmatism). I don't use glasses or an

It works, even if it's just a placebo. I have even more dioptres than you, around 5 for each eye and a nasty cylinder (astigmatism). I don't use glasses or any kind of lenses (don't even have them) for the last ~10 years.