Refract to the sphero-cylindrical distance power that gives optimal vision; DO NOT push plus. Verify binocularly with the Duochrome (red-green) in a darkened room and reduce plus until the green-side letters are first seen clearer ("one click into green").
Initial lens
the one-click-into-green spherical equivalent DISTANCE Rx, vertexed to the corneal plane. VTI's QuickStart Calculator automates this step.
One universal add covers ADD needs to +3.00D; there is no add power to select. Get distance crisp and near follows.
| Complaint | Adjustment |
|---|
| Distance not crisp | Add -0.25D to the DOMINANT eye; a second -0.25D to the same eye if needed |
| Near not adequate | Add +0.25D to the NON-DOMINANT eye; a second +0.25D to the same eye if needed |
