Enhanced Multifocal Calculator

Quickstart Calculator

Use this online tool for help selecting the right starting power with the 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 the Enhanced Multifocal and adjustments to enhance distance and near.

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-cylinidrical endpoint into the QuickStart Calculator below.

Practitioner Quickstart Calculator – VTI Vision Global
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Spectacle Refraction - 1 Click into GREEN.
Default Sphere and Cylinder values are negative. For positive values use the + sign
Inputs will be rounded down to the nearest 0.25

OD (R)
OS (L)
Enhanced Multifocal Starting Diagnostic Lens Powers:
To Improve Distance,
Change Diagnostic Lens Power To:
To Improve Near,
Change Diagnostic Lens Power To:

Refine
If further refinement is needed, first check distance Rx.
Skip over-refraction -- simply adjust the on-eye lens.
For better distance, change by -0.25D on the dominant eye.
For better near, change by +0.25D on the non-dominant eye.