Scotopic Sensitivity Syndrome

Scotopic sensitivity syndrome, also known as Meares-Irlen syndrome and Irlen syndrome is a visual disorder categorised as a form of dyslexia. People with strong symptoms of the syndrome find it very difficult to read black text on white paper, particularly when the paper is slightly shiny. The condition was jointly described by two people working individually, unaware of the work of the other person. In the early 1980s New Zealand teacher Olive Meares described the visual distortions some individuals reported when reading from white paper, while American psychologist Helen Irlen wrote a paper about the use of coloured overlays aiding the reading abilities of some people. Irlen named her findings "scotopic sensitivity", though the discussions and debates over the following years often referred to it as Meares-Irlen Syndrome.

Symptoms

  • Light sensitivity and contrast problems
  • Restricted field of clear vision
  • Poor depth perception
  • Attention and concentration difficulties

Treatment

The use of tinted-lens glasses has been prescribed by many doctors, coloured overlay sheets are also effective.

 

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