Basic S40 is a well-balanced design, the compromise between far and near has been engineered for giving good vision at both distances. As a soft design the unwanted astigmatism is very low, providing wearers with comfortable sensations due to the reduction of distortions like swim effect. Unexperienced wearers will appreciate it due its comfort and balanced compromise between distances.

Basic S40 is a good optical solution for those wearers that are looking for an intermediate price soft progressive lens.

Performance at each distance FAR INTERMEDIATE NEAR				MFH Progression L. Corridor L. 16 mm 11 mm 10 mm 18 mm 13 mm 11 mm 20 mm 15 mm 13 mm

Cylinder Map MFH =18mm	Power Map MFH =18mm
Stamps MFH =18mm