Contract lenses Power convert Chart
*Convert Rx: Glasses to Contact Lenses* 👓 → 👁️
*Why conversion is needed?*
Glasses sit 12-14mm away from your eyes, but contact lenses sit directly on the eye. So the power changes slightly.
*How to read the chart:*
1. *Minus Power / Myopia* - Check left 2 columns
- Glasses -4.00 → Contacts -3.75
- Glasses -6.00 → Contacts -5.75
- *Rule:* Below -4.00: minus 0.25. Above -4.00: minus 0.25
2. *Plus Power / Hyperopia* - Check middle red column
- Glasses +4.00 → Contacts +4.25
- Glasses +6.00 → Contacts +6.50
- *Rule:* Plus power: add 0.25
*Example for Soft38:*
If customer says glasses power is -5.50, then give Soft38 contact lens power -5.25.
*Important Notes ⚠️*
1. This is a general guide for 12mm vertex distance only.
2. For powers above -4.00, best to consult an eye doctor for final Rx.
3. This chart won't work if there's Cylinder/Astigmatism.
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