Easily replace any of our prescription lenses in our Maui or Spirit 2 mask.
Use Our Rx Optical Lens Calculator to Calculate Your Recommended Prescription
Enter the Sphere (SPH) and Cylinder (CYL) values from your prescription into the Optical Lens Calculator below and click the Calculate button to determine which of our rx lenses would best suit your needs. *Note: If your Cylinder value is greater than +2.5 or less than -2.5, please contact us at (888) 597-8445 to learn about obtaining custom ground lenses.
Eye
+/- Sphere
+/- Cylinder
Suggestion
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*Note: In addition to selecting the dropdown choice for positive (+) or negative (-) lenses, please remember to insert decimal points. Sometimes doctors get in a rush and do not put the decimal point in the actual prescription, but most sphere and cylinder values have decimal points. Example: -075 is the same as -0.75 or +550 is the same as +5.50.
