Archive for January, 2010

A Visual Journey — chapter the third

Thursday, January 21st, 2010

Our conventional and limited view of adult neuronal plasticity derives in part from the specific ways that scientists and physicians have designed laboratory experiments and clinical therapies. We cannot understand neuronal plasticity by studying brain circuits in isolation from the whole person. Only by considering a person’s adaptations and response to her condition can we really explore the amazing plasticity of the human brain to rewire itself throughout life in order to recover from injury, learn new skills, improve perception, and even gain new qualia.
— Susan R. Barry, Fixing my Gaze

Susan Barry’s book is certainly not for everyone, but like many works that explain a long misunderstood aspect of human health, reading it has been invaluable to someone who must personally face the unknown, accept a daunting challenge, and believe that one’s own body has the capacity to respond positively to a holistic, self-corrective discipline. I’m thankful that the book was recommended and glad that I read it before undergoing my first therapy session tomorrow morning at the Vision and Learning Center. I feel fully committed and as prepared as possible for 30 weeks of treatment. I’ve placed my confidence in people who might be dismissed as charlatans by some medical specialists, but that’s nothing new for me. I even heard a top expert on the Charlie Rose Brain Series recently insist that there is a “critical period” during childhood that governs the development of visual perception, which makes it impossible to correct some eye disorders later in life, a misinterpretation of research that Barry says has been long discredited by scientists and vision therapists. Well, I’m about to conduct my own experiment, under the guidance of individuals I consider to be knowledgeable, trustworthy professionals, and I’m eager to get started. Enough preliminaries! I’m fortunate to have the Center within a reasonable driving distance. Sure, I wish it wasn’t so dang expensive, but isn’t that why The Guy in the Sky grew plenty of oak trees on my knobs? Onward…

A Visual Journey — chapter the second

Wednesday, January 13th, 2010

A strabismic’s eyes are not aimed at the same point in space. The difference between the left- and right-eye views is too great for the brain to combine the images into a single picture. A person with non-aligned eyes is confronted with a serious perceptual problem; she must somehow create a single, coherent worldview from conflicting input from the two eyes. To solve this problem, many strabismics suppress the information from one eye and look through the other. Some always use the same eye, while others continually switch between the two eyes, but in either case, they may never see normally through the two eyes together. As a result, most strabismics have reduced or absent stereovision.
— Susan R. Barry, Fixing my Gaze

Spending time with the View-Master as a child was a deeply moving experience. But, after all, it was just a toy, and I was embarrassed enough about my strong emotional responses that I kept them to myself. I recall being so affected by the Flash Gordon reel that knowing there was a finite limit of images nearly brought me to tears. What was it about seeing those 3D impressions that was so profound? Was it because my natural depth perception was already deficient or in decline? I knew I wasn’t very good at hitting or catching a ball. Did I simply lack an athletic reflex, or could it have had more to do with an inability to place objects in space, a known characteristic of monocular vision? How flat has my world been all along?

Yesterday I went to the Vision and Learning Center for a battery of diagnostics that measured and benchmarked the current state of the eye disorder. I’m starting to get more comfortable with phrases like a) Vertical Strabismus (eyeballs out of alignment), b) Oculomotor Pursuits (something to do with how cognitive function enables the eye to move smoothly), and c) Binocular Fusional Disfunction (inability of brain neurons to coordinate dual-eye vision). Actually, it’s wrong to think of it as an eye problem. A “brain glitch” is probably a more accurate way to understand it. Some of the tests seemed ridiculously easy, while others were very difficult and exhausting for me to perform. At the end of my session came a discussion about the details of therapy, timetable, and costs. Once-a-week sessions at the Center for 30 consecutive weeks, plus daily home practice, 30 minutes minimum. For some reason, I wasn’t expecting such a long program, and the sticker price knocked me for a loop. I left with doubts about whether I could take on the economic commitment, even though I knew I had enough discipline to make the approach work. Dana and I had a long discussion. We kept arriving at the same conclusion: I simply had to get this fixed, and somehow we would manage our finances to pay for it out of pocket.

Awesome?

Monday, January 11th, 2010

Tonight was the most enjoyable hour of Chuck that has ever aired. Might have made it worth sitting through all those lousy ‘Buy More’ episodes. NBC probably wishes it still had Life and Journeyman on the shelf, now that the Leno-at-10 idea has collapsed.

A Visual Journey — chapter the first

Saturday, January 9th, 2010

I’ve made entries before that allude to my progressive vision problem, but I’ve only now decided to formally record some of my experiences during this new year, when I undertake a therapeutic course of action. While learning about this disorder—a form of misalignment generally known as strabismus—I may need to correct some of the information conveyed, as I gain greater or more specific knowledge. At first, I recall noticing an odd head position and disturbing look in my eyes when I closely examined photos of myself. Initially I could dismiss it as an aberration, or comfortably deny that anything meaningful was indicated. Eventually, I came to accept it as my “pirate eye,” and began to avoid looking at others with a leftward glance, which seemed to bring the misalignment into play. Joan mentioned her optometrist to me, but I wasn’t prepared to seriously tackle the situation. By and by, more realizations that the condition was getting worse convinced me I could no longer put off the idea of professional intervention. Dr. Graebe turned out to be a highly capable diagnostician and engaging clinician. He said that I had already lost 60% of my depth perception, with a deficient ability to process uncoordinated binocular movements. Every symptom I described seemed to just reinforce the obvious for him, and I was mildly surprised that I didn’t have some unique or difficult to define condition. And so he prescribed “vision therapy,” based on the awareness that my root problem is not muscular, but involves the brain’s ability to make sense of neurological input from two organs—our source of three-dimensional vision. In addition to setting up an appointment with the Vision and Learning Center, he urged me to read Susan Barry’s Fixing My Gaze. I’m sure it’s not unusual for a person with a health challenge to discover that his or her malady has been ably explained by an author who has faced the same situation in life. Although I still don’t understand the full implications of taking on the discipline of vision therapy, starting the book has triggered numerous memories and personal observations about my sensory experiences since childhood. Dr. G had been particularly struck by my statement that I knew from an early age I was a two-dimensional thinker, preferring the flat surface over volumetric or architectural forms. It caused me to think about whether I have ever possessed “normal” depth perception. For the longest time, foreshortening has bedeviled me as an artist. I’ve always been a slow reader, never been a good driver, nor been favorably inclined to certain eye-hand motor skills, even though it’s clear I had a natural manual dexterity from the beginning. As a marksman, I excel at single-eye target shooting, but ask me to hit something on the move with a shotgun and the results prove embarrassing. 2DmeSaddest of all is when I realized that the awe of star-gazing had slipped away, as my ability to perceive the dimensionality of the night heavens declined. The optimistic hope for improvement, given the functional plasticity of brain neurons, is emphasized by both Susan Barry, Dr. G., and Debra (my therapist). I accept that, in spite of having no comprehension of the difficulties that lie ahead, or how “one must learn to align the eyes and fuse their images, while unlearning the unconscious habit of suppressing vision, which has been occurring perhaps for decades,” or how therapy “requires high motivation and self-awareness, as well as enormous perseverance, practice, and determination.”

We shall see…

“Jonrik” is no more . . .

Friday, January 8th, 2010

jonrik cartoon

This is the last image I created in a partially successful effort to provide “cartoons to the editor,” in partnership with my pal, Rick. It’s from 2003, when several improbable events converged: Kentucky elected the first Republican governor in a generation, Saddam was captured in Iraq, Boyle County and Danville football teams concurrently won state championships for the third time, and local voters passed a liquor-by-the-drink ballot measure. The cartoon was rejected for unknown reasons. In retrospect, it does seen to violate one of the basic rules of editorial drawing— focus on a single, easy-to-grasp idea. Oh well, I still like that style, but it was too much work to continue for free.

2010 — Empty nest?

Thursday, January 7th, 2010

kan.jpg

 
“Time for you to leave…”
  — Master Kan