The CYL values you've inserted are not correct! The total value of the Sphere and Cylinder must not exceed 10.
The AXIS values you've inserted are not correct! If CYL value is higher or lower than 0, AXIS values can't be 0.
You've inserted 1 positive and 1 negative value, which is very rare. We suggest double checking your prescription. If this is correct, you can proceed.
By clicking on continue, you will be skipping the prescription step. We'll ask for it after your order, either by uploading it or having us call your doctor.
UNDERSTANDING YOUR PRESCRIPTION
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.
HOW TO MEASURE YOUR PUPILLARY DISTANCE
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:
Grab a small ruler in one hand, and have your pencil and paper handy.
Now position yourself approximately 8 inches (20 cm) away from a mirror.
Close your left eye and align the 0 mm over the center of your right pupil.
Measure the distance from your right to your left pupil.
The number that lines up directly over your left pupil is your PD (An average PD for an adult ranges between 58 and 65).
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