I'm also of the opinion that surgery should be avoided unless necessary. To that extent, you might want to try the Bates method of improving eyesight. (I'm sure that's not the best link, but it's the first one I saw.)

It assumes that sight irregularities are a result not of lens problems, but eyeball problems, and that they are caused by muscle stress on the eyeball itself. I'm not going to say that it will cure your eyesight problems, or even that it will help, but I can't imagine that anything in it could possibly hurt, so I'd definitely try that for a while before letting anyone cut on your eye, which, while probably unlikely, does have the potential for damage.