The needs of progressive lens wearers are rapidly changing, and users require wide and clear vision at hand range distance due to the use of digital devices”. The new Energy design combined with a shallower 9mm corridor provides natural comfortable eye movement through the length of the lens. This enables a more ergonomic head position while using digital devices.
As long as the eye can rotate within the vertical angle of 20°, the head remains in a natural position. Once over 20°, the head is automatically tilted backwards. This is not an ergonomic posture. The new Energy design combined with a 9mm corridor enlarges the hand distance vision range. Therefor the eye rotation remains within 20° and the head remains in an ergonomic position.