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Colorimetry

Scientific research has shown that 'visual stress' can be reduced by colouring the page using spectral filters
 Symptoms of Visual Stress 
  • Movement of print
  • Blurring of print
  • Letters changing size or shape
  • Letters fading or becoming darker
  • Patterns appearing, sometimes described as 'worms' or 'rivers'
  • Illusions of colour-blobs of colour on the page surrounding letters or words
  • Rapid tiring
  • Headache or visual discomfort
  • Sore, red or watery eyes 
Visual stress very often occurs in both dyslexic and non dyslexic individuals.
 
Spectral filters
  • Coloured overlays which can be placed on the page
  • Precision tinted lenses which are worn as spectacles
 
 
 
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