Instruction for use of the Mandell-Moore Bitoric Lens Guide

1) Determine the need and parameters for a bitoric lens

2) Place the keratometer readings in the boxes marked keratometry reading this measure is in diopters

3) Place the spectacle Rx in minus cylinder form in the boxes next to the spectacle lens Rx Sphere in the first box Cylinder in the second box and the Axis in the third box following the large X.

4) If patient was refracted at a vertex distance other than 12mm place this value in the VD box this measure is in mm

5) Press the Calculate drum values button.

The results are shown in the area marked bitoric lens parameters and is in the form: Flat Curve, Flat Power/Steep Curve, Steep Power.  This program is as others always a work in progrees.  If anyone has any suggestions or comments please use the contact form at www.technicalopticians.org