How Your Prescription Safety Glasses Are Made

About your order

What is pupil distance, or "PD"? How do I measure it?

What is segment height? How do I measure it?

What is a progressive (no-line) bifocal, and how do I measure segment height for progressive (no-line) bifocals?

Where do I enter my prescription in online? How to I fill out the prescription form?

What do the different lens options mean?