Crossbow Visual Stress Solutions supply Visual Stress resources for the workplace including our award-winning Monitor Overlays, Reading Rulers, Tinted Paper and Assessment Packs I deal with all aspects of sales, training and customer service and assessing individuals for Visual Stress and training on how to assess for Visual Stress.Visual stress refers to discomfort and print distortion brought about by pattern glare: certain repeating shapes, high contrasts and brightness. The most common form of this pattern glare is found when an individual is reading black text on a white background.This can cause visual symptoms (e.g. the blurring of letters and skipping of lines), and physical symptoms (e.g. headaches and eye tiredness) which will decrease individuals reading speed and comprehension.Visual Stress can affect individuals of any age or gender with approximately 20% of the population suffering to varying degrees and 5% being severely affected, meaning that their reading speed can be increased by at least 25%