Mandell-Moore Bitoric Lens Guide - Per Eye

1. Keratometry @ @
2. Spectacle Rx (Minus Cyl Form) x
Flattest K Sphere Power Steepest K Sph+Cyl Power
3. Enter K
4. Enter Spectacle Power
5. Vertex Adjust Line 4
6. Insert Fit Factor (-) (+) (-) (+)
Add Lines (3&6) (5&6) (3&6) (5&6)
7. Final CL Rx
Base Curve Power Base Curve Power

Bitoric Lens Fit Factor

Corneal CylFit Flat MeridianFit Steep Meridian
2.0 DioptersOn K (0 D)0.50D Flatter
2.5 Diopters0.25D Flatter0.50D Flatter
3.0 Diopters0.25D Flatter0.75D Flatter
3.5 Diopters0.25D Flatter0.75D Flatter
4.0 Diopters0.25D Flatter0.75D Flatter
5.0 Diopters0.25D Flatter0.75D Flatter

Instructions