Breakdown of brain’s visual networks linked to mental illness

Breakdown of brain’s visual networks linked to mental illness

Article by Kara Manke, Duke University: https://medicalxpress.com/news/2018-05-breakdown-brain-visual-networks-linked.html?fbclid=IwAR0ey_T1AbJbqXAjhQQH73xYl6qvQjKMhscGksKVme9IsFHER_RslPp0phE A follow up to the previous post. These research findings are not at all surprising to me. I would also like to add that it is highly likely that these results do not only pertain to a breakdown of those circuits but also to an incomplete initial development of these circuits (because of strabismus or amblyopia for instance). "People who reported a greater number of or more intense psychiatric symptoms were assigned a higher p-factor score. All participants who were diagnosed with mental disorders were referred for treatment. In a study published…Read more …
Why are sounds more “real” and understandable to me than visuals?

Why are sounds more “real” and understandable to me than visuals?

Michael Lievens: "When you learn a second language at a later age, it is "stored" in a different brain region than your native language, and more detached from your emotional centers. As Nelson Mandela once said upon learning Afrikaans: "If you speak to a man in a language he understands, you will reach his head. If you speak to him in HIS language, you will reach his heart." I'm having a similar experience using my various senses. When I listen to a text, it is directly absorbed by my intellect. But when I try to…Read more …
TESTIMONIAL: Teagen D. (38) achieves visual fusion for the first time in her life. Amazing!

TESTIMONIAL: Teagen D. (38) achieves visual fusion for the first time in her life. Amazing!

Teagen D. (38) is a game producer and programmer living in Seattle. As a child one of her eyes was patched and she had two strabismus surgeries at the ages of 1 and 12. She thinks the patching wasn't very effective and the surgeries did more harm than good. "My pediatric ophthalmologist was a classic anti-Vision Therapy doctor. He told me I'd never improve my condition." In 2001, as a college student, Teagen started Vision Therapy at the age of 21. Over the last 17 years she has done 5 rounds of VT under…Read more …
The Crowding Effect: Importance in reading readiness and its assessment

The Crowding Effect: Importance in reading readiness and its assessment

What is the crowding effect? People with amblyopia experience the crowding effect, which is described as difficulty reading a letter when it is surrounded by other letters or contours. For this reason, when testing visual acuity in amblyopes, you may measure a better visual acuity using isolated letters than if you use a single line or the entire chart. When reading a row of letters, amblyopes can usually also read the first and last letters more easily than the middle letters. The crowding effect is more pronounced in strabismic amblyopes than anisometropic amblyopes.…Read more …
Developmental timelines of Amblyopia

Developmental timelines of Amblyopia

This table is taken and completed with information from the book "Applied Concepts in Vision Therapy" by Leonard Press.   "Critical period: birth to 6 months aggressive treatment required: critical to provide child with clear visual input lack of treatment results in legal blindness and nystagmus untreated infantile cataract is an extreme model of consequences of deprivation during early visual development. They exhibit dense, irreversible amblyopia with nystagmus infantile cataract is most treatable amblyogenic factor at this age other amblyogenic factors are maximally influential at this age Sensitive period: 6 months to age…Read more …
Redefining Amblyopia as disorder of vision development

Redefining Amblyopia as disorder of vision development

I am studying various chapters from the book "Applied Concepts in Vision Therapy" by Leonard Press. In this blog post I have compiled some of the most relevant and poignant quotes from chapter 7 called "Amblyopia: A Microcosm of Visual Disorders". "Various tacks of amblyopia research:  Conclusions of the Hubel and Wiesel research: form deprivation results in profound alterations of the total visual system. Practicioners should monitor amblyogenic factors (!) such as strabismus, uncompensated anisometriopia, high uncompensated isometropic defocus, organic defocus as a result of disease (cataract, glaucoma, ...), or iatrogenic defocus such…Read more …

“Development of Vision and Visual Delays”

I read a very relevant developmental vision related article on the website of the American Acadamy of Ophthalmology. From ophthalmology quarters archaic, overly pro-surgery sounds are often heard when it comes to strabismus and developmental vision issues. Nonetheless, sometimes they pleasantly surprise you. The article shows awareness of the need to monitor visual milestones in infants and visual function in older children to maximize potential and quality of life. It also touches on the need to correct farsightedness or hyperopia as quickly as possible to avoid later problems. On the research level some…Read more …
INTERVIEW: “At age 58 I can finally see properly for the first time ever. I am finally at peace.”

INTERVIEW: “At age 58 I can finally see properly for the first time ever. I am finally at peace.”

MICHAEL: Hello K! Who are you and where do you live now? K: I was born in 1958 in the Cherokee Nation in the state of Arkansas. My ancestors were from the Eastern Band of Cherokees and migrated south from the Trail of Tears. I lived there from 1958-60  when we moved to Albuquerque, New Mexico, which is close to The Four Corners Area. I was adopted into a Hopi family from that region later. In 1966, my family moved to Oahu, Hawaii. My childhood and youth in Hawaii were pretty tough for various reasons.…Read more …

A New Year’s update from Bill Johnston (71)

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…Read more …
Herb Black: Geologist turned Optometrist after 3D vision discovery

Herb Black: Geologist turned Optometrist after 3D vision discovery

"I had never had 3D vision, but didn't really know it until I was an adult. I noticed I had no 3D vision because, as a geologist, my colleagues would look at stereo pairs of aerial photos, fuse them in free space or with a viewer, and see 3D. I could not do that at all. It was a real mystery to me how they could do that, especially in free space without a 3D viewer. My daughter had binocular vision problems as a child and was helped tremendously by optometric vision therapy here in…Read more …