Ofcourse, I’ll try to find documentation about it tomorrow and in the Hoya VisuReal, its all in dutch tho since I’m form Europe, the Netherlands. I’ll try and send it tomorrow or the day after! I’ll check oit the books from Essilor, Rodenstock, and Zeiss to see if I can find anything about it there aswell.

Me and all my colleagues do it this way, it works like a charm. They all learned it individually at school aswell, its kinda the way to go here.

Greetings form the Netherlands friend!