Please enter the eyeglass prescription exactly as it appears on your prescription slip. Always start with the right eye (OD), then move to the left eye (OS). Be sure to include the word "PLANO" (or its abbreviation, "PL") if it appears anywhere on the eyeglass prescription slip. Please be advised that if the prescription includes a cylinder correction (the amount of astigmatism), there must be also be an axis noted (the direction of the astigmatism).
Prism is added by the doctor if the eyes need help working together or staying in proper alignment. Vertical Prism helps to correct vertical eye misalignments and is prescribed in opposite directions for both eyes ("up" / "down"). Horizontal Prism helps to correct lateral eye misalignments and is always prescribed in the same direction for both eyes ("in" / "out").
Pupillary Distance is the distance between pupil centers, in millimeters. It's often found on the prescription slip itself. If not, you may take your child's PD measurement yourself by placing a ruler just below the eyes and measuring the distance, in millimeters, from pupil center to puil center.
If you have any questions about your prescription, please call us at (800) 908 - 4801.