Jaw clenching, Vision Therapy and earthquake resistant structures

Jaw clenching, Vision Therapy and earthquake resistant structures

Personally I learn a lot from reading/listening up on vision rehab and anatomy but I learn just as much from having conversations with other strabismics. I think it's a practice that could be useful to anyone with any problem. Don't compare yourself to people with a very differing, in this case neurological, background. Learn from people who are similar to you and dealing with similar day-to-day problems. What follows is a blog post constructed on this type of conversation. PASQUALE: Hi Michael, in many blog entries you mention jaw clenching. I too have…Read more …
The vestibular system and vision

The vestibular system and vision

I've been reading up on the link between vision and the vestibular system. It's been quite instructive to say the least. Of course it's annoying not to be able to align the eyes and have double vision while reading etc... However, there's more. It's very interesting how compromised eye movements, in large part due to eye muscle surgery, and consequently a compromised Vestibulo-Ocular Reflex are likely to be the biggest source of disability and fatigue for me personally. When going beyond my relatively low visual endurance limit, the sensory conflict between the visual…Read more …
Head rotations, bar reading and bring on the prism flippers

Head rotations, bar reading and bring on the prism flippers

  Head rotations Last week, for the first time, I had a completely stable percept while doing my head turns. I couldn't believe it!  I thought I was suppressing or something but I wasn't. Both eyes were just heedlessly adjusting to the head movements without error. It must be great to be able to take these reflexes for granted! I had predicted this milestone for the end of April et voila. Another hurdle taken. The reflexes are not equally reliable every day but that, again, is a matter of time. Speaking of head…Read more …
Book Review: ‘The story of the human body: Evolution, Health and Disease’ by Daniel E. Lieberman – Strabismus from an evolutionary biology point of view

Book Review: ‘The story of the human body: Evolution, Health and Disease’ by Daniel E. Lieberman – Strabismus from an evolutionary biology point of view

Note:This review contains two sections. The first half of this article reviews the book from a general perspective while the second half deals with the book's implications to vision care and strabismus in particular. Each can be read separately according to your interest but of course you are more than welcome to read the entire review. Enjoy! "Nothing in biology makes sense except in the light of evolution." ,- Theodosius Dobzhansky In the first half of the book Lieberman kicks off with a detailed history of how we got to be Homo Sapiens and how…Read more …

NSA, if you read this, tell NASA to look into the vestibulo-ocular system

Recently I came across an interview female astronaut Karen Nyberg gave to CNN. I was struck by some remarks concerning long term vision problems astronauts are having.  KN: This week we've been doing a lot of experiments on our ocular health. We've noticed some problems over the past several years with many of our astronauts.  They come back to Earth after three to six months in space and have long term vision problems, changes in their vision. We are trying to figure out what exactly is causing that.  Luca (Parmitano) and I have been…Read more …

The human visual system

"The sensory system that has been best looked at is the visual system. Primates are highly visual animals and it turns out that human beings probably have, in addition to the primary visual cortices, thirty or more other areas of the cortex devoted to vision. Let's think about what that's about... Here's this cortex that we thought of as higher order association cortex and now we find out that it's sensory in nature. Well, how do we get information about the world? We get it through our sensory systems and one of the…Read more …
What role do various brain areas play in vision? – Part 1

What role do various brain areas play in vision? – Part 1

After previously writing about the basal ganglia and the crucial role they play in vision and brain plasticity, I was intrigued and wanted to understand what implications binocular vision dysfunctions have for the brain as a whole more thoroughly. In this post, part 1, I will introduce more related brain areas involved in visual processing one by one. In part 2 I want to provide a more cohesive view of what is told in part 1, a illustrative summary if you will, explaining how this relates to earlier discoveries and my own experiences…Read more …