The ultimate choice in progressive lens designs. The “Accuracy Calculation” makes the visual performance unparalleled, incorporating a special calculation process to provide ultra-crisp view like no other. This lens design takes into consideration frame wrap (the frame curvature in front of the eyes), pantoscopic tilt (the vertical angle of the lens in relation to the wearer’s face) and back-vertex index (the distance between the back surface of the lens and the front surface of the eye), which results in a fully tailor-made lens and personalised viewing performance to the individual needs. The complex calculation algorithms combined with the most advanced manufacturing technologies provide the most precise and accurate lenses the world has ever seen.
There are two main categories for progressive lens design. These are hard and soft designs. This refers to the amount of blur that is located in the peripheral blending zones. As a multifocal lens has to correct different prescriptions on the top, middle, and bottom of the lens (distance, intermediate and near vision), it consists of a complex series of curves. For aesthetic reasons, these curves are blended, resulting in a smooth, even surface. The inevitable blur is pushed to the least used section of the lens, the peripheral and nasal parts.
