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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)
NaturalVue® 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.

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