Irlen syndrome: looking at the world through tinted spectacles
Sufferers of this light-processing problem can improve their lives by wearing coloured lenses
Irlen syndrome is a light-processing problem which results in high levels of “visual noise” and a range of symptoms that may include reading difficulties, migraine, poor depth perception and lack of concentration. It is a condition that affects about five per cent of the population and more than 40 percent of people with dyslexia and dyspraxia.
In 1983, Helen Irlen, a psychologist and educator in California, discovered a particular group of individuals could be assisted through the use of coloured acetate sheets overlaid on reading materials or by the wearing of coloured lenses in glasses. The coloured sheets and lenses work by changing how light is processed in the brain, thus eliminating the distortion that sufferers of Irlen syndrome experience in their everyday lives, in particular when looking at black print on a white background.
Fíona de Buitléir is a resource teacher at Ennis National School, Co Clare. She recently published Dyslexic Brains Learn Differently, a book for children by children, written from the perspective of pupils in her reading class. De Buitléir is a screener for Irlen syndrome and has it herself, though she did not realise it until becoming a screener.
De Buitléir has carried out research in Ennis NS and in St Killian’s NS in Cork (a school for children with severe dyslexia) to see if the statistics tally with international data. She found they do, with 17.5 per cent of the 360 students tested at Ennis NS showing significant symptoms and 37 percent of children at St Killian’s. A striking result of her research was the negative effect of whiteboards in the classroom, with many children reporting physical discomfort such as headache and nausea.
Because colour is effectively different frequencies of light, the lenses change how the brain perceives the information it receives, resulting in positive effects including “an increased ability to read for longer periods, reading with greater fluidity and efficiency, the elimination of headaches, improvement in restlessness and impulsivity and a general feeling of increased comfort”.
De Buitléir likens the effectiveness of the coloured lenses to that of an inhaler for an asthmatic. “If you don’t have asthma you won’t see any result from taking an inhaler. Similarly if you don’t have Irlen or you get the wrong lenses, you won’t see any result.”
When de Buitléir wears her own glasses she finds they cut down on glare from the TV (usually she can see the beams of light coming across the room) and reduce difficulty driving in sunshine and at night. Her feedback from parents and students indicates the coloured lenses result in “greater comfort when reading, increased motivation to read, increased time spent reading, increased speed of reading, less irritability and less need to re-read things”.