Recommended Lens Thickness Guide

If Your Prescription has only Sphere

Standard lens: Index 1.50 (from +/-0.00 to +/-2.00 D)
Thin: Index 1.56 (from +/-2.00 D to +/-4.00 D)
Thinner: Index 1.59 / 1.6 (from +/-3.00 D to +/-5.00 D)
The Thinnest: Index 1.67 (from +/-5.00 D to +/-7.00 D)
Super Thin: Index 1.74 (from +/-6.00 D to +8.00 or -10.00 D)

 

If Your Prescription has Sphere and Cylinder

Standard lens: Index 1.50
SPH from +/-0.00 D to +/-2.00 D
CYL from +/-0.00 to +/-1.00 D

Thin: Index 1.56
SPH from +/-1.00 D to +/-3.00 D
CYL from +/-0.00 to +/-1.00 D

Thinner: Index 1.59 / 1.6
SPH from +/-3.00 D to +/-4.00 D
CYL from +/-1.00 D to +/-2.00 D

The Thinnest: Index 1.67
SPH from +/-4.00 D to +/-5.00 D
CYL from +/-2.00 D to +/-3.00 D

Super Thin: Index 1.74
SPH from +/-5.00 D to +8.00 D or -10.00 D
CYL from +/-2.00 to +/-4.00 D