Acuvue Multifocal Calculator

Acuvue Multifocal Fitting Calculator

Professional Eye Care Selection Tool

12 mm (Standard) 14 mm 0 mm (Already Adjusted)

Recommended Trial Lenses

RIGHT EYE (OD)

LEFT EYE (OS)

*Based on the Acuvue 1-Day Moist / Oasys Multifocal Pupil Optimized Design fitting guide.

How to Use the Acuvue Multifocal Calculator

Fitting multifocal contact lenses requires precision and consideration of both distance sphere and near addition (ADD) powers. The Acuvue Multifocal calculator uses the manufacturer's specific fitting algorithm to determine the starting trial lenses for patients with presbyopia.

The Step-by-Step Fitting Process

1. Input Spectacle Rx: Enter the most recent spectacle sphere power for both the right and left eyes.
2. Define the ADD: Use the lowest ADD power that provides comfortable near vision.
3. Vertex Adjustment: If the spectacle power is greater than +/- 4.00D, the calculator automatically adjusts for the vertex distance (moving from the glasses plane to the cornea plane).
4. ADD Selection: Acuvue uses a simplified three-tier system:
   • LOW: ADD +0.75D to +1.25D
   • MID: ADD +1.50D to +1.75D
   • HIGH: ADD +2.00D to +2.50D

Technical Considerations

This tool is specifically designed for Acuvue 1-Day Moist Multifocal and Acuvue Oasys Multifocal lenses. These lenses feature "Pupil Optimized Design," meaning the optical profile changes based on the patient's refractive error and natural pupil size fluctuations relative to age.

Important Professional Tip: Always perform a sensory dominance test before final fitting. If the patient struggles with distance vision, consider reducing the ADD in the dominant eye or increasing the distance sphere by +0.25D.

Example Calculation

If a patient has a spectacle prescription of -5.00 SPH with a +2.00 ADD:

• The calculator first vertex corrects the -5.00D (at 12mm) to approximately -4.75D.
• Since the ADD is +2.00, the algorithm selects the "HIGH" ADD tier.
• The starting trial lens would be -4.75 HIGH.