There is more to vision than 20/20. Some vision problems cannot be solved with glasses alone but are best treated with Vision Therapy. Optometric Vision Therapy is the science and practice of developing visual abilities to achieve optimal performance and comfort involving fixation, eye movement control, focusing, and eye teaming, as well as visual perception and visual information processing. More information about Optometric Vision Therapy is at this link.
Reference articles are available at
Some of what you may see in Vision Therapy:
Better quality of life through better vision.