Use this online tool or download the app for help selecting the right starting power with NaturalVue® (etafilcon A) Enhanced Multifocal 1 Day Contact Lenses. Simply enter the spectacle refraction using full cylinder component and axis – the calculator gives you the starting power for NaturalVue® Enhanced Multifocal and adjustments to enhance distance and near.
The NaturalVue® Enhanced Multifocal QuickStart Calculator is also available as an app from the Apple® App Store® and Google Play™®
1. Obtain BCSR
Determine the best corrected spectacle refraction (BCSR)
with full cylinder component.
2. Perform DuoChrome
Optimize initial lens selection using the binocular red/green DuoChrome Test targeting 1-Click into Green.
3. Calculate Initial Trial Lens Power
Enter the full sphero-cylindrical endpoint into the NaturalVue® QuickStart Calculator below.
Refract to 20/15 (6/4.5)
Check that the patient is not overplussed by using the binocular Red/Green
(Duochrome test)
1 CLICK INTO GREEN
Use the best corrected spectacle refraction (BCSR) using the full cylinder component
Then enter that full spectacle refraction into the NaturalVue® Enhanced Multifocal QuickStart Calculator1
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