Progressive lens provide clearer vision not just for near and far, but also for all distance in between without any abrupt changes or visible lines in the lens. Progressive lenses are divided into four sections: distance, mid-range, near and edge. The distance portion of the lens allows you to clearly see anything that is more than a couple feet away, to as for as your eyes can see. The mid-range portion of the lens allows you to clearly see anything that is at an arm's length, such as your computer screen or objects on your desk. The near portion allows you to see up close and read with natural head position.