How do I read my prescription?

1、You can get your prescription from your eye doctor. Eyeglass prescriptions may be different, but most of them are printed or handwritten in horizontal rows. The first row is the prescription for the right eye (OD), and the second row is for the left eye (OS). And you can see three values of each row, Sphere (SPH), Cylinder (CYL), and Axis.

-SPH: nearsighted [indicated with a minus (-)],farsighted [indicated with a plus (+)]

-CYL and AXIS (appear in pairs): correct for astigmatism.

And some of you may have another field labeled as ADD, which is used in a bifocal or progressive lens.

2、Lastly, we need pupillary distance (PD) to determine where the optical center of the lens should be, so we can make lenses of clear, accurate vision. Your prescriptions usually include the PD. If your doctor does not provide your PD, you can measure it yourself with our next here.