Wide-eyed Wonder: an artist's musings on three-dimensional vision

Some are color blind. I am stereo blind.

Archive for the ‘esotropia “crossed eyed”’ Category

Yoga Relaxes My Gaze

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I am still on self-imposed sabbatical from any DIY VT sessions. The red-green glasses, tubes, bird-on-a-stick and Brock String still reside in their basket on the hall stand, gathering dust. Apparently, the break is not hurting my “progress.” Instead, it seems to be another form of letting-go that might be helping.

Giving my Brain some Space

Last post I wrote about consciously giving my brain permission to use both eyes. However, this often unconsciously happens during my weekly yoga exercise session at the local Methodist church. There is something about the combination of dim lighting, soothing music and diffusion of lavender that helps my mind let go while going through and holding different yoga poses for an hour or so. About half way into the session, when I gaze rather vacantly at the ceiling, one of the ceiling fixtures will double in my central vision.

My consciously unsuppressed, permitted diplopia continues all the way through to the final 5-to-10 minute “savasana” rest time, when our instructor tells us to relax our feet and legs, torso and arms, shoulders, neck and head, including the face and eyes.

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Last week, after I relaxed my eye muscles, the dancing double images of the ceiling vent directly above me fused into a nebulous whole. It wasn’t the 3D, popped-out vent I desire, but more of an elliptical shape that was a bit wider than a circle, shifting it’s shape a bit like it was under water.

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The best part was that the watery-looking but whole ceiling vent didn’t slide back to double, nor did my brain suppress one eye to see it more clearly— what usually happens!

In my last post I shared that “Letting go also requires giving myself permission to allow a new way of seeing to emerge, to be visually open-minded.”

Yoga is making this possible , and I am thankful.

Oh to be so care-free all the day long! I must learn to cast away care “without ceasing” as a heart attitude.

Casting all your care upon Him, for He cares for you.  – 1 Peter 5:7

Relax. Let go. Give your brain permission.

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I’ve been following this VT patient’s progress reports with interest. Today’s post “Stop trying so hard and just SEE” mentions a common hurdle to diverging our eyes, the ability to RELAX those rogue eye turn-in muscles! “Stop LOOKING” my VT would often say. LOOKING to isolate something normally fixates both eyes on an object, or in my case, unconsciously fixates one eye while turning in and suppressing the out-of-alignment image of the other. “Soften your gaze” was another frequent VT exhortation.

1218randotLast week, random dots did the trick of NOT LOOKING for this VT patient, and I think I understand why. The randomness of the thing viewed eliminates the worry about getting a “right” answer, and therefore is less stressful than “Is the elephant or the fly popping out for you?” which can trigger frantic LOOKING.

Randomness is the opposite of representation, therefore the brain lets go of the need to comprehend and interpret an object. As an artist who strives to accurately represent objects, a good dose of randomness may be exactly what my brain needs to stop trying so hard.

This is why, for me, letting go also requires giving myself permission to allow a new way of seeing to emerge, to be visually open-minded.

I’m rejoicing that random dot stereograms are working for this patient to overcome her eye turn-in along with the many awesome mind-opening exercises her Vision Therapist is tailoring to wake up her brain.

By letting go and giving herself permission to see a new way, her world is opening up into the third dimension I long to experience.

 

Schools Need Binocular Vision Screening

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I read about an appeal to write my congressman from the “Let Them See Clearly Campaign” to add binocular vision screening to a bill, as posted in a DIY Vision Therapy Group I belong to on Facebook.

I emailed a rather lengthy letter to my House Representative about three weeks ago, using the campaign’s information, and adding my own research and brief personal story. I haven’t heard back, but hope to. It seems to me that adding binocular vision screening to this bill would be a good fit.  Here’s why (Although I just learned after posting that the writers want to create a separate bill*):

To the Honorable ….

re. H.R 3535 the “Alice Cogswell and Anne Sullivan Macy Act” in Committee

Dear …..

H.R 3535 should add screening for binocular vision (BV) impairment to the vision screening protocol to identify students with visual disabilities.* BV is tested via an assessment of eye focusing, eye teaming, and eye movement abilities (accommodation, binocular vision, ocular motility.)**

Under the “Categories of Disability Under IDEA” (Individuals with Disabilities Education Act), “Visual Impairment Including Blindness means an impairment in vision that, even with correction, adversely affects a child’s educational performance.”(1)

The Visual Impairment definition further states: “Most of us are familiar with visual impairments such as near-sightedness and far-sightedness. Less familiar visual impairments include: strabismus, where the eyes look in different directions and do not focus simultaneously on a single point…” (2)

Strabismus (Esotropia and Exotropia) is just one of many Binocular Vision impairments. More common ailments are:

Convergence Insufficiency, where the eyes fail to team together to see things up close. “Convergence is the coordinated movement and focus of our two eyes inward on close objects, including phones, tablets, computers, and books.”

Amblyopia or “lazy eye” where the brain suppresses the image from one eye because the image is different than that of the other eye.

Diplopia or double vision

Esophoria or exophoria, where the suppression of one eye is intermittent.

Strabismus, as either Esotropia (“crossed eyes”) or Exotropia (“wall eyes”), occurs when the suppression of one eye is well established.(3)

Undiagnosed Binocular Vision Impairments are increasingly triggered in children by our convergent-based technology, which requires turned-in eye-teaming on phones, tablets and computers, with little outdoor play to aid binocular vision development. (4)

Unfortunately, at the same time, children in school are being misdiagnosed in IEP’s when binocular vision problems inhibit learning. These children can and should receive an early diagnosis and, hence, the opportunity to pursue certified optometric vision therapy and/or recommendations from an Opthalmalogist to normalize visual processing and improve learning ability and quality of life.

Furthermore, IEPs must include accommodations necessary to aid the child undergoing optometric vision therapy as advised by their Doctor of Developmental Optometry, in order to not undo progress made under vision therapy. This may include not forcing the child to read, for example, until her unstable convergence issues are resolved.

-13 to 20% of the population have impaired binocular vision that is 75% curable according to a double blind study by NEI (5)

-Studies by ADHD and vision experts show 20 -25% are misdiagnosed and have binocular vision impairments (6)

-Autism.com says studies show that 21 to 50% of autistic children also have binocular vision impairments. (7)

“Binocular vision impairments are more common than you may think. Just one type of binocular impairment, amblyopia (“lazy eye”), affects approximately 3% of the population. At least 12% of the population has some type of problem with binocular vision.” (8)

As an adult with alternating esotropia, a form of strabismus (crossed-eyes), I can’t begin to tell you how much better my quality of life would have been if my condition had been diagnosed and treated while I was a child in the 1960s. My parents gladly spent money to straighten my teeth, not realizing that all their harping about my feet turning out and my poor posture was due to my eyes not teaming to create a visual center-line for my posture and gait. This of course made gym class excruciating, as I was always the last to be picked for any team (imagine trying to catch a fly ball without any sense of depth) and also made socialization difficult as other children did not know if I was looking at them or something else.

Instead of learning how to use both eyes together, in early childhood my brain spent extra energy suppressing the vision of one eye or the other to avoid double vision. While my early well-established suppression allowed me to read without difficulty in 1st grade, it has lasted for a lifetime.

The extra energy expended by the brain to suppress vision and live and move by monocular depth cues, instead of fusing vision from both eyes to see palpable space and distance, limits one’s ability to: multitask on any level (how many jobs require this?); drive well during demanding depth needs (e.g. driving multiple sized vehicles on the job); work in food service, landscaping, auto-mechanics, carpentry, etc.; participate in sports or recreation (eg. yoga, dance, catching or hitting a ball); or watch 3D movies (the latter is impossible.)

Please, please, make screening for binocular vision issues a goal, so that 12% of the population can benefit from early vision therapy intervention to avoid the everyday pitfalls this hidden, subtile disability creates, which must be endured for one’s entire life.

Respectfully
Lynda Rimke
https://leavingflatland.wordpress.com
*For reference:
Title II—IMPROVING THE EFFECTIVENESS OF SPECIAL EDUCATION AND RELATED SERVICES FOR STUDENTS WITH VISUAL DISABILITIES
Subtitle A—General Provisions
Sec. 201. Identifying students with visual disabilities.
https://www.govtrack.us/congress/bills/114/hr3535/text/ih

** https://covd.site-ym.com/?page=Exam

(1) http://www.parentcenterhub.org/repository/categories/

(2) http://www.parentcenterhub.org/repository/visualimpairment/

(3) http://www.covd.org/?page=VisionConditions

(4) https://nei.nih.gov/sites/default/files/nei-pdfs/VisionResearch2012.pdf p50 “spending time in bright outdoor light appears to be important for normal eye development…In 1972, approximately 25 percent of the U.S. population, 12–54 years of age, were nearsighted, compared to 42 percent 30 years later”

The Binocular Vision Dysfunction Pandemic http://c.ymcdn.com/sites/www.covd.org/resource/resmgr/ovd41-1/editorial_binocularpandemic.pdf

(5) https://nei.nih.gov/news/pressreleases/101308

(6) http://www.add-adhd.org/vision_therapy_FAQ.html

(7) https://www.autism.com/treating_vision

(8) http://www.children-special-needs.org/questions.html

For further reading:

American Academy of Optometry Binocular Vision, Perception, and Pediatric Optometry Position Paper on Optometric Care of the Struggling Student For parents, educators, and other professionals August 2013
http://c.ymcdn.com/sites/www.covd.org/resource/resmgr/position_papers/revised_oct_18_bvppo_positio.pdf

http://www.covd.org/?page=VisionConditions

http://www.covd.org/?page=Vision_Therapy

* Let Them See Clearly Campaign LTSCC just commented on my Facebook share today: After meeting the HR 3535 writers from the American Federation for the Blind, they thought that though HR 3535 should pass that BVD needs its own bill. They said it was a statement piece that the extras may bog down my efforts and never pass. I do think a BVD on its own would be best and will talk to my legislation writer and my rep contacts about options. Thanks for the blog. HR 3535 should pass and will help with BVD along with a comprehensive bill. Working on that. :) Thx for your help

I replied: Let’s hope for the best. I’m going to add your comment to my post. Thanks.

And then, later: I’ve been thinking about this. I’m not happy they think comprehensive screening isn’t part of the bill. I mean, come on, how hard is it to add a simple cover uncover test and use a pen light? https://www.youtube.com/watch?v=ZErvGS1EqyM

And just now: Ok, I remember— those two tests only discover well-established strabismus and not other binocular vision issues such as convergence insufficiency, which is far more common. Maybe a full bill just for Binocular Vision Disorders is the better idea … if it ever gets written!

 

Stereo Vision Survey

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Exciting news! Bruce Bridgeman, the gentleman who gained stereo vision after watching Hugo, has teamed up with Sue Barry of Fixing My Gaze to create a long crowd-sourced research project in search of those who have experienced increased stereo vision after watching 3D movies.

Although my stereo experiences are limited and have not yet been scientifically verified, there seems to be room for even me to take this survey, as there is a comment section at the end of three different sections where I can plug in additional information. (In my case, how BRAO has affected my vision.)

I encourage all strabismic adults to at least read the survey, which is instructive in itself. If you have had a stereoscopic experience after watching a 3D movie, share your experience in the survey.

The survey also takes into account if you have had any vision therapy or had your stereo-awareness measured by a professional.

The VisionHelp Blog

If either you, a family member, or any patients you encounter have developed stereo vision as an adult – even intermittent or weak stereo vision – please complete this survey developed by Sue Barry and Bruce Bridgeman:

http://bit.ly/1vThYaM

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The survey and its background were just published on page 13 of the new journal, Vision Development & Rehabilitation.  Through crowdsourcing of this nature, Drs. Barry and Bridgeman may be able to provide evidence to support that the viewing of stereoscopic 3D movies and similar modalities can be therapeutic for certain individuals.  We blogged about that possibility here last year, and this survey is an important step in that direction.

Completing the survey is entirely voluntary. You do not need to answer every question before submitting it. Your answers are sent to a spreadsheet which simply tabulates your answers with no other identifying information.  Thank you in advance!

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Cat’s Ear and Coffee Cup

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I have commenced to sketch, as best I can, the various scenarios my brain morphs together. Today’s initial sketch for “The Physiological Diplopia Series” is called “Cat’s Ear and Coffee Cup”

One thing that has become of my leaving-flatland-goal + BRAO is Wonderland. Thanks to the three months of Vision Therapy I did have, plus lots of vision research and blogging, I am familiar with aspects of vision that I previously ignored: expanded peripheral vision, heightened motion parallax and physiological diplopia.

Of these three beautiful vision aspects, physiological diplopia is confirmation that my BRAO is not preventing both eyes from working together to look at the same thing at the same time in the same space. In my case, I experience it most 3-13″ or so from my nose, the same distance I was able to create diplopia with the Brock String before my BRAO.

Here is a diagram of this morning’s scenario. Instead of a bead on a string, I was staring at the tip of my cat’s ear just through the handle of my coffee cup which I was holding next to my face about 1:00 from the tip of my nose.

 

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Next to the diagram is my sketch of what I saw from each eyes and both eyes combined into a brain morph of right and left aspects:

 

The vertical hatching above the right eye cup is my BRAO. Note, when I am using both eyes, I cannot experience physiological diplopia where I have no right-eye vision (this is also true for stereo vision). In this case, in my 3rd sketch of both eyes looking, the top of the cup assumed the left-eye aspect.

The Wonderland experience was seeing my coffee securely held by an open shell spiral that my brain created when both eyes pointed at the tip of my cat’s ear! If I attempted to study the mirage too closely, it vaporized and the scene defaulted to the left-eye image. This is because my left eye has the superior central vision and therefore bears the “what” function of my vision.

I don’t see the brain morph most of the time. Normal people with stereo vision also do not see physiological diplopia unless they allow themselves to, by turning off their own brain suppression. I can’t vouch for how that happens; ask a Developmental Vision Therapist!

* “In an alternating esotropia the patient is able to alternate fixation between their right and left eye so that at one moment the right eye fixates and the left eye turns inward, and at the next the left eye fixates and the right turns inward. Where a patient tends to consistently fix with one eye and squint with the other, the eye that squints is likely to develop some amblyopia. Someone whose squint alternates is very unlikely to develop amblyopia because both eyes will receive equal visual stimulation.” [3]