There’s new hope for the approximately 700 million people in the world with dyslexia, the condition that causes a person’s brain to produce “mirror images” of letters and numbers.
French scientists recently published a study that found that the tiny light-receptor cells in the eyes of dyslexic people were arranged in a matching pattern in both eyes.In non-dyslexic people, those cells are arranged asymmetrically to create an image.
In an article in The Guardian, Guy Ropars of the University of Rennes and co-author of the study said, “Our observations lead us to believe that we indeed found a potential cause of dyslexia.”
Ropars explained that a preliminary diagnosis of dyslexia could be made by looking into a patient’s eyes.
He added that “the discovery of a delay (of about 10 thousandths of a second) between the primary image and the mirror image in the opposing hemispheres of the brain, allowed us to develop a method to erase the mirror image that is so confusing for dyslexic people.”
How? By using an LED lamp.
Most people have a “dominant” eye, as they have a dominant hand. The dominant one has more synaptic connections than the weaker.
To see, images are captured by rods and cones in the eye—the cones are responsible for color.
Most cones—which are red, blue, and green—are in a small spot in the middle of the retina. There’s a small hole with no blue cones.
Ropars and his colleagues found that dyslexic people have a major difference in how their cones are arranged as compared to non-dyslexic people.
In non-dyslexic people, the blue cone-free spot in the dominant eye was round, and the non-dominant eye, it’s uneven. In dyslexic both, both eyes have the same round, cone-free spot.
What does this mean? It means that there’s no dominant eye.
The study concludes that “The lack of asymmetry might be the biological and anatomical basis of reading and spelling disabilities.”
Learn more about doctoral research in education.
Thousands of students receive PhDs in Australia every year. And while there is a great need for their talents in the private sector, woefully few of ...
That glow from your smartphone may be keeping you up at night more than you realize. Avoiding the color cyan--a cross between blue and green--may help...
When we hear the phrases “Los Angeles” and “exclusive schools,” thoughts of Beverly Hills may first come to mind. However, when it comes to ex...