Looking from the outside，Progressive lenses is almost the same as the ordinary lens, but the reality is completely different. Ordinary glasses only has one degree requirement, while for the progressive lenses, there are a number of different brightness. Of course, it is a regular. Designers make use of the width of the lens’ up and down, the upper portion of the lens is designed to use for the luminosity far, the second part of the lens is designed to near reading, between the upper and lower parts were designed as a continuous increase in optical section, so you will get a clear vision from distance through the middle of the transition until the recent use of a continuous range of viewpoints. » Read more: The different between regular and Progressive glasses