Scientists may have found a physiological, and seemingly treatable, cause for dyslexia hidden in tiny light-receptor cells in the human...

Scientists may have found a physiological, and seemingly treatable, cause for dyslexia hidden in tiny light-receptor cells in the human eye. In people with dyslexia, the cells were arranged in matching patterns in both eyes, which may be to blame for confusing the brain by producing “mirror” images.

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  • Journal reference:

    Left–right asymmetry of the Maxwell spot centroids in adults without and with dyslexia

    Albert Le Floch, Guy Ropars

    Proceedings of the Royal Society B, 25 October 2017, Volume 284, issue 1865

    Published 18 October 2017.

    DOI: 10.1098/rspb.2017.1380



    > In human vision, the brain has to select one view of the world from our two eyes. However, the existence of a clear anatomical asymmetry providing an initial imbalance for normal neural development is still not understood. Using a so-called foveascope, we found that for a cohort of 30 normal adults, the two blue cone-free areas at the centre of the foveas are asymmetrical. The noise-stimulated afterimage dominant eye introduced here corresponds to the circular blue cone-free area, while the non-dominant eye corresponds to the diffuse and irregular elliptical outline. By contrast, we found that this asymmetry is absent or frustrated in a similar cohort of 30 adults with normal ocular status, but with dyslexia, i.e. with visual and phonological deficits. In this case, our results show that the two Maxwell centroid outlines are both circular but lead to an undetermined afterimage dominance with a coexistence of primary and mirror images. The interplay between the lack of asymmetry and the development in the neural maturation of the brain pathways suggests new implications in both fundamental and biomedical sciences.

  • Dyslexia is a spectrum, right? I have always been a little suspicious that I might be slightly dislexic, I have a hard time reading or remembering acronyms or numbers with repeating characters. Say I need to remember a lock combo of 1331, I will mess it up as 3113 or 1133 on a consistent basis.

  • I feel like there’s more than one cause. One person I know can’t read because the words are missing from memory. Like most people memorize the way the words look, they don’t sound them out.

  • Ok so why are there so many other things associated with Dyslexia? Bad hand writing is heavily associated with it(in some cases it’s labeled its own disorder: dysgraphia). Also 25% of Dyslexics have Auditory Processing Disorder (myself included). How does this explain either of those? There are clearly more underlying problems than just the eyes.

  • So are you not dyslexia if you wear an eyepatch?

  • There isn’t one kind of dyslexia, those pages that are like “HeReS hOw DySlExIcS rEaD” arnt like how it effects my brain, for me large chunks of text get moved around and thoughts don’t stay in their order from me reading it to the words comming out of my mouth, there’s more to it too but I don’t know how to describe it.

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  • Does this mean that reading with one eye closed solves dyslexia?

  • How does this explain spelling difficulty?

  • I’ll believe it once I SEE the Facebook video of the grandfather putting on the dyslexia glasses and being amazed. /s

  • I always see stuff on reddit where possible cures for everything appear but then you see it isn’t even beyond conceptual. For my friend with dyslexia how long would it ACTUALLY be before this was at an implementable stage in society.

  • Except that not all dyslexia is even related to visual stimuli. I’m dyslexic, and for me, I don’t have any problem reading. I can put away 7-10k pages a week. I have a reading problem in that I do *way too much of it*. But don’t ever ask me whether the next turn is a left or right. Hell, I even know which direction to point, but it’s a craps shoot whether I *say* the right word.

  • That doesn’t sound right. The numbers get swapped in my brain, not in my eyes. When I say “123” my words say “312” and it’s not related to vision.

  • So what about the other symptoms of dyslexia? I doubt treating this would help the other symptoms.

  • But I have poor handwriting, I can’t remember things written down for more than ten or twenty minutes, I have problems processing auditory words, and I’ll never remember how to spell extremely large words. My reading level is pretty good despite my set backs and I’m able to work about my dyslexia, but just because you found the cells that produce mirror images doesn’t make my life as easy as it should.

  • Dyslexics of the world UNTIE!

  • I’m assuming a regular eye exam wouldn’t be able to tell you if you had matching cells or not

  • I was told that dyslexia is more of a brain processing problem than a visual one. But I am dyslexic with very high astigmatism so the idea or having something wrong with my eyes being the cause seems realistic.

    Also, what are the odds of these eye tests will actually be implemented for diagnosing dyslexia in the future?

  • What about for those of us who are dyslexic in speech? Say “wabletare” instead of tableware. That’s my dyslexia!

  • This is unbelievable if true. This has effected so many people, not just making it more difficult to read but the sometimes stigma that the person has a learning disability.

  • I remember years ago they used to prescribe tinted glasses for people with dyslexia. I remember pink lenses… I wonder whatever happened to that?

    It apparently worked well.

  • I would love for my father to be able to read without getting so frustrated. Sometime’s it’s the simple things

  • Dyslexia cured with pirates patch! – greatest timeline.

  • Weird question but I wonder if there any evolutionary benefits to dyslexia. Do dyslexics have any capabilities that non dyslexics don’t.

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