What is Irlen Syndrome?
Irlen syndrome, identified by Helen Irlen in 1983, is a visual perceptual problem that prevents many people from reading and learning efficiently. It is estimated that 12-14% of the general population and 46% of those with specific learning difficulties, including dyslexia, have Irlen syndrome. It occurs as a result of the brain not processing visual inputs correctly, making images, print and in some cases depth perception distorted.
What is the range of symptoms?
What are Irlen lenses?
The patented Irlen treatment method uses precision tinted filters, worn as glasses, although coloured overlays may be used in the interim. The treatment reduces or eliminates perceptual difficulties and light sensitivity.
What evidence is there to support the efficacy of Irlen lenses?
Research at renowned universities has shown that the difficulty may lie in the brain's ability to accurately process visual information in the lateral geniculate nucleus, where a mistiming between fast and slow moving visual information leads to visual difficulties. It has been shown through MRI's that when an individual with Irlen syndrome reads without the aid of Irlen lenses, the brain has to work significantly harder to process text. Once the lenses are put on, brain activity is drastically reduced, indicating that the brain is more comfortable and better able to deal with the demands of reading.
What is involved in an assessment?
An intensive diagnostic assessment determines the beneficial filter colour.
The assessment is in two parts:
What results might an individual expect?
Improved reading accuracy
Increased reading speed
Reduced strain and fatigue
Better sports performance