Why are aspheric lenses better than spheric lenses?That depends on the basic principle they work.Conventional lenses for nearsightedness do just the opposite: They make things look smaller and give the wearer's eyes a small, "beady-eyed" appearance.Aspheric lenses greatly reduce these undesired magnification and minification effects, so the world
looks more natural to the wearer, and the wearer's eyes look more natural to everyone else.