Vertex Distance Calculator
How It Works:
- Enter the Lens Power (in Diopters, D)
- Enter the Vertex Distance (in mm)
- Click “Calculate Adjusted Power”
- Uses the formula: P′=P1−(d×P)P’ = \frac{P}{1 – (d \times P)}P′=1−(d×P)P​
- Where
dis the vertex distance in meters
- Click “Reset” to clear all fields
Why Use This Calculator?
✔ Helps in Contact Lens to Glasses Conversion
✔ Essential for Optometrists & Opticians
✔ User-Friendly & Accurate Calculations
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