Improve Your Eyesight Naturally: See Results Quickly - book review ?

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Haven't completely read and tried for an extended period of time the first book, and I'm already excited, and thinking about buying the next one

Improve Your Eyesight Naturally: See Results Quickly
by Leo Angart

I have read some positive reviews on Amazon but I'm curious if there is anybody here who have read or tried this book before.

Ps.
I hope that this time my excitement won't fade away so quickly and that I would be able to forge it into a consistent vision improvement practice