I've worn my glasses for just over a month to let my eyes go back to 'natural' after wearing gas permeable lenses almost every day for nearly 15 years. My eyes were -5.0 and -4.5, the -5.0 had a 1.73 astigmatism too.
I wore the Ortho-k lenses for the first time on Monday night and when I had my eyes tested on Tuesday morning, they had changed to -1.25 from -4.5 and -2.25 from -5.0 (and the astigmatism was 0.29, so barely noticeable).
Wednesday, even better - could read the 20/20 line with my right eye (the one that had been -5.0) and the left eye is not far behind.
This morning, both eyes are very nearly perfect.
So, if anyone's considering laser surgery, I thought they might like to know that for some people at least, there is an option without the long-term uncertainty of laser surgery - I am SO happy with the results!