What is Visual Stress?
Simply explained, Visual Stress ( Meares-Irlen syndrome) is a sensitivity to visual patterns, particularly stripes. In some individuals this condition can cause visual perceptual problems which interfere with reading. The symptoms can occur despite normal vision.
One current scientific explanation is that the perceptual problems are due to a hyperactivation of the visual cortex of the brain, which is reduced by precise individual colour.
Visual stress can be reduced by the use of coloured filters: either by a coloured overlay placed over text or coloured lenses worn in spectacles. The reduction occurs only when the colour is selected to suit the individual. The selection of lenses is best undertaken with the aid of the intuitive colorimeter.