Reference:
1. The NaturalVue Multifocal QuickStart Calculator is available at www.naturalvuecalculator.com, or as an app from the Apple® App Store® and Google Play™. Google Play and the Google Play logo are trademarks of Google Inc. Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.