Doing a Google search on "learning visually" yields beaucoup hits on "learning disabilities" and "visual learning disabilities" and "visually impaired." I'm beginning to think that this is like old-time psychology, where the first cases were all deranged. Psychologists still seem to know more about mental illness than mental health.
Another area that pops up on a search is "learning styles." Now that's an interesting concept, but most of us use all of the styles. It's not either/or so mucha as a matter of degree. I'm drawn to visuals like a moth to the flame, but that doesn't mean I don't read and write.