Select Right (OD) or Left (OS) to begin.
Trial lens libraries ready
Enter 0°. Curves and adjustments mirror to every meridian.
Z4 width auto-calculated

Load or enter the baseline lens. The workspace preserves it as your reference.
Lens meridians rotate counterclockwise on the eye.
Quad Angular Offset—
Calculated Reference Sag—mm
No observed rotationOffset correction0°
FP-safe offset—
Quadrant remapNone
VertexingNot required
Choose where to place the diameter change and preserve a mathematical sagittal relationship.
A shorter zone is steepened and a wider zone is flattened so the following zone begins at approximately the same projected height.
Enter the new diameter and choose where to place the change.
Compare the reference lens with the new posterior lens design.
One case record. Different outputs for the lab and the doctor.
Start with the catalog the doctor is using.