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For SPH grades above 6.25 with CYL above 2.25 contact us by email or message (special order)
For SPH grades above 7.25 contact us by email or message (special order)
Your Pupillary Distance, or PD, is the distance in millimeters (mm) from the center of one pupil to the center of the other.
Can’t find your PD? No problem. You can leave the default setting of 63 which is the average measurement for adults. If we need any more information about your prescription, one of our experts will be in touch.
If you want, you can measure your PD yourself by following these steps:
Right Eye (OD)
OD stands for “oculus dexter” which is Latin for “right eye”.
Sphere (SPH) – also known as Power (PWR)
They mean the same thing: the strength of your prescription. If you’re nearsighted you will have a minus (-) before your values, and if you’re or farsighted you will have a plus (+).
Axis
This is only for people with astigmatism. The axis is a number between 0 and 180 and determines the orientation of the Cylinder (CYL).
Left Eye (OS)
OS stands for “oculus sinister” which is Latin for “left eye”
Cylinder (CYL)
This is for people with astigmatism. This is when one part of the eye needs more correction than the rest. The Cylinder value is written with a minus (-) sign.
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Full of imagination and inspiration, mellon offer eyewear that highlights the modern style and gives the most outstanding look.
