Attention Deficit Disorder is a completely separate condition than dyslexia. However, research has shown that at least 40% of people with dyslexia also have AD/HD.
Light Sensitivity (Scotopic Sensitivity)
A small percentage (3% to 8%) of people with dyslexia also have light sensitivity (sometimes called scotopic sensitivity). These people have a hard time seeing small black print on white paper. The print seems to shimmer or move; some see the rivers of white more strongly than the black words. These people tend to dislike florescent lighting, and often "shade" the page with their hand or head when they read.
Colored plastic overlays and/or colored lenses can eliminate the harsh black print against white paper contrast, and may make letters stand still for the first time in someone's life. However, the plastic overlays or colored lenses will not "cure" dyslexia, nor will they teach a dyslexic person how to read.
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