Vision therapy (with or without a professional advisor) works for some people, but not others. We don't know why.
Myopia is a terrible thing to discuss, there are so many people guessing and making false claims about things.
> quackery
COVD, the professional association has existed for 40 years, https://www.covd.org/page/About_Us
The College of Optometrists in Vision Development (COVD) is a non-profit, international membership association of eye care professionals including optometrists, optometry students, and vision therapists. Established in 1970, COVD provides board certification for optometrists and vision therapists who are prepared to offer state-of-the-art services in Behavioral and developmental vision care, Vision therapy, Neuro-optometric rehabilitation.