Yeah, sounds like quackery to me. Eye exercises can help for "lazy eye," when one eye does not focus well. But the human eye has muscles which bring the focal point in (which can be strengthened by exercise). It does not have muscles to push the focal point out. Thus exercises might help for presbyopia, but not for myopia. And even for presbyopia, there are limits because as the eye ages, the lens becomes stiff, making it harder and harder to bring the focal point in, which is why old people need reading glasses, unless they have just the right amount of myopia.