A New Year’s update from Bill Johnston (71)
“Today is the second anniversary of the day that I permanently gained stereopsis. Random thoughts.
There is no magic bullet. It takes time, lots of time, the brain has to adjust. My sudden onset of stereopsis may have seemed like a magic bullet, but it was six months in the making, by exercising every morning. My brain was not at all prepared to receive the new dimension of depth that the stereopsis gave it, so my progress accrued very slowly, my brain had to adjust to the changed images. Over the past two years, in small increments, my vision has continued to improve. The last increment just a few weeks ago was the most profound: the bad eye actually made a quantum move, I’m not cross eyed anymore, giving me a much greater sense of depth both near and far away. My motion parallax has also improved. It is as though each improvement sows the seeds of the next improvement. As the brain adapts to the better image, it in turn sends better commands to the eyes to further improve the image. My brain has been rewiring, not only to use, but to continue to adjust the new visual input.
We only see three visual dimensions: height, breadth, and depth. The two dimensions of monovision are like a tripod that’s missing one leg. Depth is huge, it stabilizes the whole visual sphere; it creates the sphere In fact.
I’ve looked at vision from both sides now and I am here to tell you that monovision is a pretty severe deprivation. I never could even have imagined what 3D is like.
When I wake up every morning and look around at the objects popped up I am reminded: ‘oh yeah, depth, I can see now.’ It’s still like a fantasy world, a dream come true. It’s a wonderful way to start my day.
Happy New Year, all!”