I have now sold optiswiss for 2 months and I am quite impressed, have in some experience with their computer lenses, the first 3 we have handed out is not completely satisfied, in others have experienced some similarity, we have used those called s fusion office , their coatings are the finest I've ever seen and people's acclimatization to their progressive lenses is amazing. all the information about these lenses from you who have been working with them for years is appreciated.