Outdoor Progressive design :

Outdoor Progressive design is for those who use their eyes most of the time to look at things at a distance of 5m and beyond, which is also called hard design or car design. Its feature is that far view area is significantly greater than near view area. It is mainly suitable for people like drivers, referees and so on. As shown in the graph, the most important feature of Free4D design is the biggest cylinder spot astigmatism at the bottom right of effective optical power area, with max cylinder of astigmatism less than 80% ADD value in the effective area, a wider channel and astigmatism cylinder less than 0.02D in near view.