trial lens used:
with an over-refraction of:
Show Instructions
- Enter sag adjustments (Ξm) for each zone to update lens curves and power instantly.
- Zone widths and chord lengths are fixed and always displayed.
- Sag values may differ slightly from FocalPoints due to modeling differences.
- Hover over the lens Base Curve and Power line to view full specifications.
- Use the reset buttons to return zone adjustments to 0 Ξm or reload the original base lens.
- Click "Clear Form" at the bottom to reset everything and select a new diagnostic lens.