UNDERSTAND YOUR PRESCRIPTION

UNDERSTAND YOUR PRESCRIPTION

Your Prescription Doesn't Have to Look Complicated

Eyeglass prescriptions contain abbreviations and numbers that tell us how your lenses should be made.

Eyeglass Prescription
OD Right Eye
OS Left Eye
SPH Sphere
CYL Cylinder
AXIS
PD mm
OD

Right Eye

OD

OS

Left Eye

OS

Understanding Your Prescription

Eyeglass prescriptions contain abbreviations and numbers that tell us how your lenses should be made.

01

SPH — Sphere

Indicates the main amount of lens power needed to correct nearsightedness or farsightedness.

02

CYL — Cylinder

Shows the amount of correction needed for astigmatism.

03

AXIS

Works with the CYL measurement and identifies the orientation of the astigmatism correction.

04

ADD

Additional magnifying power used for near vision in multifocal prescriptions, such as progressives or bifocals.

05

PRISM

Some prescriptions include prism correction. If your prescription contains prism and you're unsure whether we can fill it, please contact us before ordering.

06

PD — Pupillary Distance

The distance between the centers of your pupils, measured in millimeters.

PD — Pupillary Distance

PD helps us properly position the optical centers of your lenses.

Important:

Enter your prescription exactly as it appears on the prescription provided by your eye-care professional. Do not change plus/minus signs or prescription values.