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Do you wear glasses? Or are you thinking of getting a pair?
There are many known techniques to improve your eyesight. For example, exercises, supplements, but also the use of the right biofrequencies.
Hereby you have found another method to improve your eyesight. The corresponding areas of the body are strengthened and go into vibration with the constructive frequencies.
Try it out and listen to the session at least 1x a day.