Bing:
Just as a memory refresher into the
real "reasoning" behind the dioptre debate, please re-read my post under this thread, which you yourself originated:
http://www.pprune.org/ubb/NonCGI/For...ML/000313.html
WRT the use of weaker lenses, yes it works; I use this technique myself. On the civil aviation side of things, I have no worries on this issue as I am fortunate enough to live in a country which could care less about what strength glasses a commercial pilot needs (USA) as long as the wearer is correctable to 20/20 or better. Still, there remains one issue: weaker lenses cost less, and if you can make your eyes adapt to a prescription of lesser strength, then so much the better!
By all means, check out these links here:
http://members.aol.com/myopiaprev/index.htm
and
http://www.myopia.org