Question: what is the difference between varilux x fit and x design?
Answer: 'X' Marks a New Varilux Design. ... Varilux X Series is available in three options: Varilux X Design (fit with PD and fitting height like any progressive), Varilux X Fit (adjusted to work with the Position-of-Wear measurements), and Varilux X 4D (dispensed with the Visioffice measuring system).