Persona PRO Sigma is the premium progressive lens that provides the user with improved binocular vision, especially in the intermediate and near areas.
Persona PRO Sigma lens is optimized considering the natural convergence of the eyes when looking at a nearby object.
Positioning the near area in accordance with this convergence improves the user’s vision because it increases the binocular field of vision. However, this generates a non-homogeneous distribution of astigmatism.
