There is a lot of confusion in our industry about which parameters are the most important towards supplying a successfully dispensed RX progressive. Not surprisingly, those items directly controlled by the ECP are still the most important! Base curve and lens index material play a role more important than factors such as customization and individualization.
Both pairs of lenses were of identical material and base curve, and mounted in the same frame.
Wearers were surveyed about their experience with the lenses after testing them both.