eyeRelax HD XN: Maximized for near and intermediate use with limited distance vision. Sitting down to read a book, do some office work—basically getting down to business? This lens is perfect for you.
eyeRelax HD XM: Maximized for most distance possible. This is still a task lens so don’t expect to shoot a perfect game in bowling league wearing these. XM is great for people that are up and down or need to be able to look across the room and see customers or coworkers.
eyeRelax HD XB: Balanced. This is the default version of the eyeRelax lenses and provides the a mix of near and distance vision without compromising too much of the intermediate width provided by the XN.