Bitoric / High Astigmatism Tools and Resources



  1. When Should I Fit a Toric GP Lens?
  2. How Do I Design and Fit a Bitoric Lens?

GPLI Toric and Spherical Lens Calculator
Plug in the spectacle Rx and keratometry, get instant calculations of lens parameters.

Mandell-Moore Bitoric Lens Calculator
Download the files to install this program on your PC or Mac; includes instruction guide.

Mandell-Moore Guide for Empirical Bitoric Design
The Guide includes a printable blank form, instructions and sample form.

Newman GP Toric Guide
This modification of the Mandell-Moore Guide is used as an empirical design GP toric calculator and complements both the Mandell-Moore and GPLI calculators listed above.

Grand Rounds Troubleshooting Guide
Assists in troubleshooting spherical, multifocal, high astigmatism, KC, irregular cornea, post-surgical and corneal reshaping fits.

Contact Lens Clinical Pocket Guide
Helpful for fitting or evaluating patients; view as a smart phone-ready PDF or order a printed copy.

GP Lens Management Guide
Provides management options for common GP-related problems or conditions for spherical, highly astigmatic, presbyopic and keratoconic patients.

Vertex and Diopters-to-Base-Curve Conversion Charts
A web-page version of the useful charts that appear in the Contact Lens Clinical Pocket Guide.