There is a good exercise that I learned from a few NVI teachers and when I finally learned how to do it I noticed it does big good for me. I was seeing clearer.
This is about seeing 3D images, if you have ever had a chance to hear about them, but without 3D glasses. There are some available on market. Some are called stereograms, some are hidden images.
The trick is
Prevention of good eyesight and vision improvement
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