“Electronic Rapid Alternate Occlusion Goggles” as Anti-Suppression treatment

“Electronic Rapid Alternate Occlusion Goggles” as Anti-Suppression treatment

Following an interesting thread on Facebook and some e-mailing back and forth with Patricia Simone Fink OD and Eric Hussey OD who were generous enough to share their time, research and experience with me, I decided to make another investment in my vision in the form of Electronic Rapid Alternation Occlusion Goggles. New year, new projects and new ways of approaching existing problems! What are Electronic Rapid Alternate Occlusion Goggles? "Electronic rapid alternate occlusion (ERAO) using liquid crystal lenses is used to treat suppression of binocular vision, a defect affecting the sensory combination…Read more …
Looking back at 2014 and looking forward to 2015

Looking back at 2014 and looking forward to 2015

I just reread my post from December 25th, 2013. It's always interesting to compare thoughts over time. Often we get lost in the day to day to remember the overall progress we have made. I remember being able to do some bar reading for the first time ever in January 2014. I also remember being able to do head turns without the view going double and shaky in May. This still isn't always the case, depending on fatigue, but that's when it happened for the first time. Stabilizing the Vestibulo-Ocular Reflex will be…Read more …
Check-up 9: Our four year anniversary

Check-up 9: Our four year anniversary

On December first I had my half yearly optometric evaluation. Sight in both eyes is good but the axis of astigmatism in my left eye has shifted marginally. This is my current Rx. OD: +2.50 OS: +2.50 cyl -1.0 axis 35° When testing my binocular vision my ocular motor abilities are approximating what it should be. When testing sensory fusion things are less clear. Looking through an haploscope using some basic targets I do perceive the suppression controls and have what looks like a consistent and fused image. Based on this my optometrist…Read more …
Some of my current home based VT activities

Some of my current home based VT activities

Everything we do or don't do has neurological consequences. That's why everything we do or don't do matters. It's important to note that these activities are not suitable for every VT patient. Nor are they suitable at any stage in the rehabilitation process. They are suitable for me because my ability to control my eyes has reached a level allowing me to handle these activities without imploding, albeit with appropriate rest. Getting to this stage has taken a long time. I've had to do a lot of boring ground work first. Expanding the…Read more …
Strabismus, visual field loss and visual-spatial neglect

Strabismus, visual field loss and visual-spatial neglect

"Right after I lost vision in my eye, I was so bad at walking that I ran into a girl eating ice cream, and knocked her cone out of her hand. She screamed: ‘Are you blind!?!?’ I turned to her and said: ‘I am blind actually, I’m so sorry, I’ll buy you a new cone.’ And she said: ‘Oh my God! I’m so sorry! Don’t worry! It’s no problem at all! I’ll buy another one.’ So we walked into the ice cream store together, and the clerk said: ‘I heard the whole thing.…Read more …

Football without stereoscopic depth perception (video + optometric analysis)

HISTORY As a strabismic child that suppressed one eye at the time, I played football (soccer) during every recess period at school. Clearly I had no stereo vision. Nonetheless I was a fairly good player and loved playing. I could be totally absorbed by it. At one point I also tried playing in a club. Because of my vision dysfunction I didn't have the energy to both keep up with my school work and go to the training sessions so I had to quit. Suppressing one eye is a wasteful business. I had…Read more …
Session 72: In pursuit of more speed, accuracy and consistency

Session 72: In pursuit of more speed, accuracy and consistency

The foundation has been put in place. Finishing it up by perfecting the collaboration between vergence (eye movements) and accommodation (manipulation of the eye lens by your tiny muscles in the eye) and increasing capacity will be the closing deal. Major physical restrictions have been largely eliminated. More speed, more accuracy and more endurance. These will be the stakes as I move towards normal functionality. The time that I could not even participate in certain training activities has passed. Finally most activities are accessible and progress will, rather than being merely damage control and…Read more …

Check-up 8 (After three years and three months)

Apparently these check-up meetings are turning into happenings. Last time there was one intern present, this time there were two. I like an audience as much as the next guy. Progress remains consistent making these meetings very pleasant. My doc pointed out to the students I once had to convince him to take me on as a patient but that now he fully encourages me to go on as progress keeps on producing itself. Now it's just a fun fact.   Both eyes are still farsighted (around 2,5) with some evolution when it…Read more …
Alternation, cyclopean eye and the attentional spotlight

Alternation, cyclopean eye and the attentional spotlight

As my eyes are aligned most of the time by now I have no real concept of alternating between both eyes anymore. Despite the mechanical alignment of my eyes, I still do not use them equally. My vision still seems to be rather lateralized to the right. When I intentionally give myself double vision by moving my eyes apart, the image from my right eye is still the 'main image' and the one from the left eye feels secondary. In fact, in double vision mode I can still alternate. I can switch main…Read more …
Matan Drumer on living with and overcoming Convergence Insufficiency

Matan Drumer on living with and overcoming Convergence Insufficiency

Previously I wrote about how lately my situation more resembles a Convergence Insufficiency profile rather than a manifest strabismus profile. Most of the time my eyes are grossly aligned and I'm aware of both images although I do have some remaining surround suppression. My cyclopean eye is also still somewhat positioned to the right side of my head. Traditionally I used to be an alternating esotrope with a dominant right eye but after some surgeries the situation has gotten a lot more complex. For the moment the issue most impeding me from being…Read more …