There’s still a lot of confusion around on the subject of Visual Stress and its relationship to Dyslexia so I’m going to post a series on the topic to try and clear some of it up.
They’re not the same thing
That’s the first point. Dyslexia is a cognitive processing difficulty; Visual Stress is a disorder of the visual processing system. Visual Stress is common in dyslexia, but does not cause it. In fact about 35% of dyslexics suffer from Visual Stress. It is also fairly common (though less so) in other specific learning difficulties, especially dyspraxia, ADD/HD and autistic spectrum disorders – the autistic author Donna Williams, for example, is well-known for her pink tinted lenses. It actually occurs in about 25% of the population, so it is more common than dyslexia (usually quoted at around 10%); and severely – to the extent that literacy is significantly impaired- in…
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