LENS COLLECTIONA Canadian Z-generation progressive option for multiple viewing distances. It appears as its own product in the regional catalogue.
Far, intermediate and near zones share one lens. Fitting height, frame position and the way you read or use screens influence how you reach each zone.
Compare local fitting and material options rather than inferred global equivalents.
Higher index can change thickness, but it is only one part of choosing a lens.
Compare the measurements and design process, not just the premium label.
Get the exact design, material and service terms in writing.