Conversion Resources
Spherical Equivalent Charts
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By Julie Sennett
·2 min read
Welcome to Contacts Advice's Spherical Equivalent Charts.
Here you will find the Spherical Equivalent of every Sphere and Cylinder combination between Sphere values of 0 to −7.75 and Cylinder values of 0 to −3.25.
The charts are based on the following spherical equivalent formula: Spherical Equivalent = Sphere + (½ × Cylinder)
Spheres 0 to −0.75
Spheres −1.00 to −1.75
Spheres −2.00 to −2.75
Spheres −3.00 to −3.75
Spheres −4.00 to −4.75
Spheres −5.00 to −5.75
Spheres −6.00 to −6.75
Spheres −7.00 to −7.75
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