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Thread: Tell me about coloured filters for dyslexia

  1. 04-28-2009, 06:32 PM #1
    UP TO NO GOOD
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    Tell me about coloured filters for dyslexia

    Anyone wanna tell me the differenes? Especially overlays V irlen V jordan or whatever?

    Anyone who does gets a gift of columbian marching powder!
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  2. 04-28-2009, 06:38 PM #2
    Fezz
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    Welcome to Optiboard UptoNoGood!

    You should do a little search on these forums and look up a fellow member, Ian Jordan.

    :cheers::cheers::cheers::cheers::cheers:
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  3. 04-29-2009, 02:14 AM #3
    Ian Jordan
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    filters - differences

    Overlays have so many things wrong with them at a professional level that I would consider them unacceptable even bearing in mind that they can help some children

    Irlen uses essentially a trial and error method to choose (broadband) filter. These are usually worn constantly. There are a number of other systems which are similar.

    The techniques we have developed (with UK governement assistance) use cone cell and ganglion cell physiological responses to hue saturation and brightness. We work in 3D colour space to determine optimum performance parameters of the visual system (to CIE standards - the internationally accepted standards) convolve for metamerism for ambient lighting, and from this can determine optimum filters. It is extremely complex - and most optical professionals have limited knowledge.
    Filters have enormous effects - we have just completed a clinical trial in UK medical school - paper will be published soon.
    For a basic background you can get a DVD which I made in association with Coventry University or download a relatively old book on my practice website www.jordanseyes.com

    I am presenting a paper (on the effects of filters in prosopagnosia) in the US 24 July (in country 22 - 25) at the ASA national conference near Chigao - if optical professionals in area want a "mind blowing"lecture, happy to oblige
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  4. 04-29-2009, 07:30 PM #4
    harry a saake
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    pink defiency

    Ian, a patient of mine has trouble seeing light pink shades, dark pink he can discern, any color i could lightly tint his glasses so he could see light pinks
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  5. 04-29-2009, 09:24 PM #5
    chip anderson
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    Pinks: Shouldn't be a problem unless he is a Republican.
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  6. 04-29-2009, 10:13 PM #6
    tmorse
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    Quote Originally Posted by chip anderson View Post
    Pinks: Shouldn't be a problem unless he is a Republican.
    Thilly!!:p
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  7. 07-14-2014, 12:09 AM #7
    Emmet Ropia
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    Pink or cruxite lenses are actually preferred by republicans whilst they may be annoyed by the presence of blue tints.
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  8. 07-14-2014, 02:10 AM #8
    Chris Ryser
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    Blue Jumper Pink or cruxite lenses are actually preferred by republicans.........................

    Quote Originally Posted by Emmet Ropia View Post

    Pink or cruxite lenses are actually preferred by republicans whilst they may be annoyed by the presence of blue tints.

    Then you can always use a Blue Blocker
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