I was browsing some other threads on here and reading questions and answers, and it made me think of a new one. Since it’s been so long since I’ve had 20/20 vision, I was wondering whether people still use active focus (either instinctually from habit, or to help clear vision) once they reach 20/20 and no longer wear any distance lenses, ever.
I remember Bates talking about “central fixation”, which I’m pretty certain was actually his term for, and way of describing the concept of “active focus” (which I much prefer as a term, as it’s more intuitive than “central fixation”). And his position on it was that everyone with good vision uses it, and that it was protective against myopia.
Dr. Orfield described it using the psychophysical term “JND” (just noticeable difference), and concepts of timed convergence and focusing, which allowed the eyes to focus accurately and clear an image at distance. “Peripheral awareness” (where you’re not attending to explicitly, but are still aware of, the periphery) was also a key component of it for her explanation. She, too, felt this was all a prerequisite of good, “functional” distance vision.
That these concepts keep coming up in all of these sources, means they’re the keys. They’re all the same thing viewed from different angles, in any case, and all of these practitioners have come to similar conclusions that active focus and its many cousins are necessary for both improving and maintaining excellent distance vision. Some would argue for reading or near vision, too.
So, for those who have reached 20/20 and entirely discontinued lens use, do you still use active focus? If so, how, when, and what does it “feel” or “look” like, versus the way you used to do it with lenses on?