A vision specialist often works with students with vision loss to make the best possible use of remaining sight. This includes the elimination of unnecessary glare in the work area, removal of obstacles that could impede mobility, use of large-print books, and use of special lighting to enhance visual opportunities. Although children with low vision often use printed materials and special lighting in learning activities, some use braille because they can see only shadows and limited movement. These children require the use of tactile or other sensory channels to gain maximum benefit from learning opportunities.