At the basic level of internal design technology, Succeed & Succeed WS lenses are still highly advanced. Their design customizes aspheric compensation in the progressive channel based on the patient's complete Rx. The result is a much wider viewing areas throughout the lens.
Seiko Succeed has a soft design that is enjoyed by first time wearers. It is recommended for people with active lifestyles and for prescriptions with low to medium add powers. Succeed has a minimum fitting height of 17mm.
Seiko Succeed Ws is a hard design better suited to seasoned wearers and those with difficult prescriptions. It is recommended for prescriptions with medium to high add powers, and has a minimum fitting height of 15mm.