Vision therapy covers a broad range of conditions.
> 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.
A local search found 40 COVD-certified optometrists.