I love this discussion. It's so cool seeing in real time the questions and answers that come up with a new lens design. I have a couple questions of my own to add here.

Quote Originally Posted by Pete Hanlin View Post
Before the process is considered "complete," the studies will need to show substantial improvement in the targeted visual functions for ALL Rx categories (which means the Varilux X Series "design" will be quite different for a hyperope vs. a myope).
Can you expand upon this? How is the design different from Rx to Rx? Perhaps more importantly, do we as opticians have functional control over which design is selected, or will "design A" always be chosen for a hyperope and "design B" always chosen for a myope? Do all of Varilux's lenses operate this way, or is this something that is unique to X-Series?