Progressive addition lenses for reducing unwanted astigmatism comprises optical center of the surface with unwanted areas of astigmatisms

摘要

The astigmatism map of the lens (20) comprises optical center (27) of the surface, rotated by 10[deg], with areas (31,32) of unwanted astigmatisms and maximum localized unwanted astigmatisms (28,29). An independent claim is also included for a process for producing a lens.