Advice wanted on best exercise program to naturally improve my vision (short sightedness and stigmatism)

My optometrist has told me I'm starting to go short sighted and I've been wearing glasses for about 2 years now to correct a slight stigmatism.

My optometrist told me I'm too old to use exercises to improve my vision. Even though I have only just started to go short sighted and my optometrist says I don't need corrective lenses for it yet. I am 39 years old.

I did some research on the internet and found the following books and programs:

http://www.rebuildyourvision.com/

http://www.program-for-better-vision.com/?gclid=CNqntrbXwYUCFToSIgodjG9PhQ

http://www.amazon.com/gp/product/1556432577/sr=8-1/qid=1150147112/ref=pd_bbs_...

http://www.amazon.com/gp/product/1556433417/sr=8-3/qid=1150147112/ref=pd_bbs_...

http://www.amazon.com/gp/product/0805002413/sr=8-4/qid=1150147112/ref=pd_bbs_...

http://www.amazon.com/gp/product/1582700893/sr=8-5/qid=1150147112/ref=pd_bbs_...

Before I spend any money, please someone tell me whether I can completely cure my shortsightedness and stigmatism naturally and which technique/book is most recommended.

I also almost totally blind in my left eye. Would that make any difference? There is no cure for this problem because I had a cataract at birth and so nerves that connect my brain to that eye never developed properly.